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Medical Disclaimer: This guide is for educational purposes only and does not constitute medical advice. Hormone levels are influenced by many individual factors including age, sex, medications, and health conditions. Always consult a qualified healthcare provider before making decisions about hormone testing or treatment.
Comprehensive Guide
Blood serum, saliva, and DUTCH dried urine testing explained. Which hormones to test, when to test them, how to interpret results beyond standard reference ranges, and where to order tests directly. For men and women.
3
Testing methods compared
10
Key hormones analyzed
12
DUTCH metabolite markers
6
DTC testing options
The Foundation
Hormones are the master regulators of your body. They control metabolism, mood, energy, sleep, body composition, libido, cognition, and aging. Yet most people — and most doctors — treat hormones as an afterthought.
Reference ranges are statistical constructs: the 2.5th to 97.5th percentile of the tested population. This population includes people who are overweight, diabetic, hypothyroid, sleep-deprived, and chronically stressed. Being “within range” means you are not in the sickest 5% — it does not mean you are healthy or performing optimally. Optimal ranges are narrower and are based on the levels associated with the best health outcomes, highest physical performance, and lowest all-cause mortality in research. Throughout this guide, we provide both standard and optimal ranges so you can see the gap.
3 Methods Compared
Blood, saliva, and dried urine each have strengths and limitations. Understanding when to use each method is the key to comprehensive hormone assessment.
Venipuncture / Standard Blood Draw
Best for: Baseline hormone levels, thyroid panel, insulin, IGF-1, SHBG
Limitations: Captures a single point in time. Misses diurnal rhythm, metabolite pathways, and tissue-level hormone activity. Free hormone fractions can be inaccurate if calculated rather than measured directly.
When to use: First-line testing for everyone. Start here to establish baseline hormone levels before considering advanced testing. Most insurance-covered and widely available.
Salivary Hormone Assay
Best for: Free (unbound) cortisol rhythm, free testosterone, free estradiol, free progesterone. Excellent for tracking the cortisol awakening response (CAR) across the day.
Limitations: Measures only free hormones (not total). Contamination risk from food, bleeding gums, or topical hormones. Not ideal for thyroid, insulin, or IGF-1. Some labs have inconsistent reference ranges.
When to use: When you suspect adrenal dysfunction or HPA axis dysregulation. The 4-point cortisol curve reveals patterns a single AM blood draw cannot. Also useful for monitoring bioidentical hormone therapy.
Dried Urine Test for Comprehensive Hormones
Best for: The gold standard for comprehensive hormone analysis. Maps estrogen metabolism pathways (2-OH, 4-OH, 16-OH), cortisol metabolites, organic acids (B12, B6, glutathione markers), and melatonin. Reveals how your body processes hormones, not just how much you produce.
Limitations: More expensive. Not widely covered by insurance. Requires collecting 4-5 dried urine samples over 24 hours. Overkill for initial screening. Interpretation can be complex without a knowledgeable provider.
When to use: When blood work looks 'normal' but symptoms persist. When you need estrogen metabolism detail (breast cancer risk, estrogen dominance). When cortisol pattern matters. When you want one comprehensive test that covers hormones + organic acids. Ideal for women with complex hormonal symptoms.
Start with blood. A comprehensive blood panel is the foundation of hormone testing. It is the most widely available, most affordable, and gives you actionable baseline data for the most critical hormones. Everyone should start here.
Add saliva for cortisol patterns. If you suspect adrenal dysfunction (fatigue, wired-but-tired, afternoon crashes), the 4-point saliva cortisol curve reveals patterns that a single AM blood cortisol cannot. This is the most cost-effective way to assess HPA axis function.
Upgrade to DUTCH for the full picture. When blood work looks “normal” but symptoms persist, or when you need estrogen metabolism detail, cortisol metabolite analysis, or organic acid markers, the DUTCH test provides a depth of information that no other single test matches. It is especially valuable for women with complex hormonal presentations.
The Essential Panel
These are the hormones that drive energy, body composition, mood, libido, cognition, and aging. Each entry includes reference ranges, optimal ranges, when to test, and clinical context most doctors skip.
Primary androgen hormone. Drives muscle mass, bone density, mood, libido, energy, and cognitive function in both sexes. Declining total T is associated with increased all-cause mortality in men.
Reference Range
264-916 ng/dL (M) | 15-70 ng/dL (F)
Optimal Range
500-900 ng/dL (M) | 30-60 ng/dL (F)
When to Test
Fasting, 8-10 AM. Testosterone peaks in the early morning and can drop 30-40% by afternoon. Two separate AM draws recommended before diagnosing low T.
Clinical Notes
Total T includes both bound (to SHBG and albumin) and free fractions. You need both total and free to get the full picture.
The bioavailable fraction that actually enters cells and activates androgen receptors. A man can have 'normal' total T but low free T if SHBG is elevated. Free T is often more clinically relevant than total.
Reference Range
9-30 ng/dL (M) | 0.3-1.9 ng/dL (F)
Optimal Range
15-25 ng/dL (M) | 1.0-1.5 ng/dL (F)
When to Test
Same draw as total T (fasting, 8-10 AM). Request direct measurement (equilibrium dialysis or ultrafiltration) rather than calculated free T, which is less accurate.
Clinical Notes
Calculated free T uses the Vermeulen equation and can be inaccurate when SHBG or albumin are abnormal. Always request direct free T measurement when possible.
The primary estrogen. In men, some estradiol is needed for bone health, brain function, and cardiovascular protection — but excess indicates aromatization of testosterone. In women, E2 is the dominant estrogen during reproductive years and its fluctuations drive cycle symptoms.
Reference Range
10-40 pg/mL (M) | Varies by cycle phase (F)
Optimal Range
20-35 pg/mL (M) | Phase-dependent (F)
When to Test
Men: same AM draw as testosterone. Women: Day 3 of cycle (follicular phase) for baseline, or Day 21 for luteal phase assessment. In perimenopause, test any day and note cycle day.
Clinical Notes
In men, high E2 with low T suggests excessive aromatase activity (often driven by body fat). Low E2 in men causes joint pain, low libido, and mood issues — some estrogen is essential.
In women, progesterone confirms ovulation and is critical for cycle regularity, sleep, mood, and fertility. Low progesterone relative to estradiol creates 'estrogen dominance.' In men, progesterone is a precursor to testosterone and cortisol and has calming, neuroprotective effects.
Reference Range
0.2-1.4 ng/mL (M) | Varies by cycle phase (F)
Optimal Range
0.5-1.0 ng/mL (M) | >10 ng/mL luteal (F)
When to Test
Women: Day 19-22 of cycle (mid-luteal phase peak). Must be timed correctly or the result is meaningless. Men: any time with AM testosterone panel.
Clinical Notes
Progesterone is the most commonly undertested hormone in women. Many symptoms attributed to 'estrogen dominance' are actually progesterone deficiency. DUTCH test provides metabolite detail (a-pregnanediol, b-pregnanediol).
The most abundant steroid hormone. Produced by the adrenal glands, it is the precursor to both testosterone and estrogen. DHEA-S declines ~2% per year after age 25. Low DHEA-S indicates adrenal insufficiency or chronic stress depleting adrenal reserves.
Reference Range
44-332 mcg/dL (M, age-dependent) | 35-430 mcg/dL (F, age-dependent)
Optimal Range
250-450 mcg/dL (both sexes, younger end of range)
When to Test
Any time of day (DHEA-S is stable throughout the day, unlike cortisol). Fasting not required. Blood serum is the standard method.
Clinical Notes
DHEA-S is the sulfated storage form and is more stable than DHEA in blood. Optimal levels are associated with longevity, immune function, and cognitive performance. Supplementation should be guided by testing.
The primary stress hormone. A single AM blood draw shows the peak. But cortisol should follow a diurnal pattern: high in the morning (cortisol awakening response), declining throughout the day, lowest at midnight. Flat or inverted patterns indicate HPA axis dysfunction.
Reference Range
6-23 mcg/dL (AM blood) | Diurnal curve (saliva/DUTCH)
Optimal Range
10-18 mcg/dL (AM peak) | Proper diurnal decline
When to Test
Blood: 8-10 AM fasting. Saliva or DUTCH: 4-point collection (waking, +30 min, afternoon, bedtime) to map the full diurnal curve. The 4-point curve is far more informative than a single blood draw.
Clinical Notes
A single normal AM cortisol does not rule out HPA dysfunction. You need the full diurnal curve. The cortisol awakening response (CAR) — the 30-50% spike within 30 minutes of waking — is a separate and important marker of adrenal health.
The thyroid controls metabolic rate and affects every other hormone. Subclinical hypothyroidism (TSH 2.5-4.5 with symptoms) is massively underdiagnosed. TSH alone is insufficient — you need Free T3 (the active hormone), Free T4, and Reverse T3 (which blocks T3 receptors under stress).
Reference Range
TSH 0.5-4.5 mIU/L | FT3 2.0-4.4 pg/mL | FT4 0.8-1.8 ng/dL
Optimal Range
TSH 1.0-2.0 mIU/L | FT3 3.0-4.0 pg/mL | FT4 1.2-1.5 ng/dL
When to Test
Fasting, morning draw. If on thyroid medication, test before taking the morning dose. Biotin supplements can interfere with thyroid assays — stop 48 hours before testing.
Clinical Notes
Many providers only test TSH. Insist on the full panel: TSH + Free T3 + Free T4 + Reverse T3 + TPO antibodies + thyroglobulin antibodies. High Reverse T3 with normal TSH suggests the body is converting T4 to inactive rT3 instead of active T3 (common under chronic stress).
Insulin resistance is the metabolic root of hormonal dysfunction. Elevated insulin increases aromatase (converting T to estrogen in men), increases SHBG dysregulation, disrupts ovulation in women (PCOS), and suppresses growth hormone. Fasting insulin rises years before glucose or HbA1c become abnormal.
Reference Range
2.6-24.9 uIU/mL
Optimal Range
2-6 uIU/mL
When to Test
12-hour fast. Morning blood draw. Can be combined with glucose for HOMA-IR calculation (insulin resistance index).
Clinical Notes
This is the most underordered hormone test in medicine. A fasting insulin above 8 uIU/mL indicates early insulin resistance even when glucose is normal. Optimizing insulin sensitivity through diet, exercise, sleep, and cold exposure resolves many downstream hormonal issues.
Insulin-like Growth Factor 1 is the primary mediator of growth hormone's effects. Reflects your integrated 24-hour growth hormone output (GH itself is pulsatile and hard to capture in a single draw). Low IGF-1 indicates growth hormone deficiency. Very high IGF-1 may increase cancer risk.
Reference Range
53-331 ng/mL (age and sex dependent)
Optimal Range
150-250 ng/mL (middle of range for age)
When to Test
Fasting morning draw. IGF-1 is relatively stable throughout the day but fasting standardizes the measurement.
Clinical Notes
IGF-1 declines with age, poor sleep, caloric restriction, and low protein intake. It increases with resistance training, adequate protein, quality sleep (GH peaks during deep sleep), and sauna use. The goal is mid-range — not too low (muscle wasting, poor recovery) and not excessively high (potential cancer promotion).
SHBG binds testosterone and estradiol, making them inactive. High SHBG means less free testosterone and free estradiol available to tissues — you can have 'normal' total T but functionally low free T. Low SHBG is associated with insulin resistance, metabolic syndrome, and type 2 diabetes.
Reference Range
10-57 nmol/L (M) | 18-144 nmol/L (F)
Optimal Range
20-40 nmol/L (M) | 40-80 nmol/L (F)
When to Test
Fasting AM blood draw, alongside testosterone and estradiol. SHBG is essential for interpreting total testosterone results.
Clinical Notes
High SHBG causes: aging, hyperthyroidism, low carb diets, liver disease, oral estrogen. Low SHBG causes: insulin resistance, obesity, hypothyroidism, high-dose androgens. SHBG is the bridge between metabolic health and hormonal health.
Want This Personalized?
This guide gives you the science. A CryoCove coach gives you the personalization — the right dose, timing, and integration with your other 8 pillars.
Timing Is Everything
Hormone levels fluctuate by time of day, day of the menstrual cycle, and recent activity. Testing at the wrong time produces misleading results. Follow these timing protocols for accurate, interpretable results.
Advanced Testing
The DUTCH (Dried Urine Test for Comprehensive Hormones) is the most detailed hormone test available. It maps not just hormone levels but how your body metabolizes them — revealing patterns that blood and saliva testing cannot.
The 'protective' estrogen metabolite. Favored pathway. Associated with lower breast cancer risk. Higher 2-OH relative to 4-OH and 16-OH is desirable.
Action: Increase: cruciferous vegetables (DIM/I3C), adequate fiber, healthy body weight, exercise.
The 'genotoxic' estrogen metabolite. Can form DNA adducts that initiate cancer if not properly methylated to 4-MeOE1. Elevated 4-OH-E1 with poor methylation is a red flag.
Action: Reduce: limit alcohol, reduce body fat, optimize methylation (B12, folate, SAMe). Ensure adequate 4-MeOE1 methylation.
A proliferative metabolite. Higher levels associated with estrogen-driven tissue growth. Not as dangerous as 4-OH, but elevated levels in the context of low 2-OH shift the balance toward proliferation.
Action: Improve 2:16 ratio through cruciferous vegetables, DIM supplementation (100-200 mg), flaxseed, and maintaining healthy body composition.
The methylated (neutralized) form of 2-OH-E1. Requires COMT enzyme and adequate methyl donors. Reflects your methylation capacity for estrogen clearance.
Action: Support methylation: methyl-B12, methylfolate (5-MTHF), magnesium, SAMe. Avoid COMT inhibitors (excessive green tea, quercetin in those with slow COMT).
Maps the 4-point cortisol rhythm across the day. A healthy pattern shows a strong morning peak that declines steadily. Flat, inverted, or erratic patterns indicate HPA axis dysfunction from chronic stress.
Action: Morning sunlight within 30 min of waking (sets the cortisol peak). Consistent sleep/wake times. Stress management protocols. Adaptogenic herbs (ashwagandha, rhodiola) for pattern normalization.
The 30-50% cortisol spike that occurs within 30 minutes of waking. A blunted CAR indicates adrenal fatigue / HPA axis suppression. An exaggerated CAR suggests anticipatory stress or anxiety. CAR is a distinct marker from overall cortisol levels.
Action: Improve CAR: consistent wake time, morning sunlight, avoid snoozing (disrupts the CAR), reduce evening screen exposure, address chronic stressors.
Shows total cortisol production over 24 hours. Free cortisol can appear normal while metabolized cortisol is high — meaning you are producing and clearing large amounts. This 'hidden' high-cortisol pattern is missed by blood and saliva testing.
Action: Address root-cause stressors. Support cortisol clearance through liver health (NAC, milk thistle). Reduce caffeine, especially after noon. Deep sleep optimization.
Cortisol (active) is converted to cortisone (inactive) by the 11beta-HSD2 enzyme. A high ratio means your body is not deactivating cortisol efficiently, leading to excessive cortisol tissue exposure. Reflects cellular-level cortisol stress.
Action: Licorice root can inhibit this enzyme (avoid if ratio already high). Stress reduction, sleep optimization, and anti-inflammatory protocols help normalize the ratio.
Functional marker of vitamin B12 status. Elevated MMA indicates B12 deficiency at the cellular level, even when serum B12 appears normal. B12 is essential for methylation, nerve function, and red blood cell production.
Action: Supplement methylcobalamin (B12) 1,000-5,000 mcg sublingually. Address potential absorption issues (low stomach acid, pernicious anemia, metformin use).
Functional marker of vitamin B6 status. Elevated xanthurenate indicates B6 insufficiency. B6 is a cofactor for over 100 enzyme reactions including neurotransmitter synthesis (serotonin, dopamine, GABA) and hormone metabolism.
Action: Supplement pyridoxal-5-phosphate (P5P, the active form of B6) 25-50 mg daily. B6 is also depleted by oral contraceptives.
Marker of glutathione demand. Elevated pyroglutamate indicates your body is using glutathione faster than it can produce it — a sign of oxidative stress. Glutathione is the master intracellular antioxidant.
Action: Support glutathione: NAC 600-1,200 mg daily, glycine 3-5 g daily, selenium 200 mcg, vitamin C 1,000 mg. Reduce oxidative stress triggers (alcohol, processed food, environmental toxins).
Marker of oxidative DNA damage. Elevated 8-OHdG means reactive oxygen species are damaging your DNA — accelerating aging and increasing cancer risk. One of the most direct measures of cellular oxidative stress.
Action: Antioxidant-rich diet (berries, dark leafy greens, green tea). Reduce oxidative triggers. Cold exposure and exercise (paradoxically) upregulate endogenous antioxidant systems long-term. Supplement CoQ10, vitamin C, and NAC.
A woman with fatigue, weight gain, and PMS has blood work showing estradiol and progesterone in the reference range. The DUTCH reveals elevated 4-OH-E1 (genotoxic estrogen metabolite), poor methylation, blunted cortisol awakening response, and elevated pyroglutamate (glutathione depletion). The blood work missed the entire picture. Treatment: DIM for estrogen metabolism, methylated B vitamins, morning sunlight protocol, and NAC for glutathione.
A man with anxiety and insomnia has a normal AM cortisol blood draw. The DUTCH reveals free cortisol is normal but metabolized cortisol (THF + THE) is extremely high — he is producing massive cortisol but clearing it rapidly. The blood test captured the snapshot; the DUTCH captured the 24-hour reality. His total cortisol burden is 3x normal despite a “normal” blood result. Treatment: aggressive stress reduction, adaptogenic herbs, and evening relaxation protocols.
The Hidden Hormone
Sex Hormone Binding Globulin is not a hormone, but it controls how much of your hormones actually work. SHBG is the single most underappreciated marker in hormone testing.
When SHBG is elevated, it binds more testosterone and estradiol, reducing the free (active) fraction available to your tissues. You can have a “normal” total testosterone but functionally low free testosterone.
Low SHBG allows more free hormone but is itself a marker of metabolic dysfunction. Low SHBG is independently associated with insulin resistance, type 2 diabetes, cardiovascular disease, and PCOS in women.
Key insight: SHBG is the bridge between your metabolic health (insulin, body composition, liver function) and your hormonal health (free testosterone, free estradiol). You cannot fully interpret testosterone or estradiol results without knowing your SHBG. Any provider who orders total testosterone without SHBG is giving you an incomplete picture. Always request SHBG alongside your sex hormone panel.
Adrenal Health
The CAR is a distinct physiological event that reveals the health of your HPA axis. It cannot be captured by a standard blood draw.
Within 30 minutes of waking, cortisol surges 30-50% above waking levels. This is the cortisol awakening response — a distinct event controlled by the hippocampus and suprachiasmatic nucleus (your circadian clock). The CAR primes your brain and body for the day: it enhances alertness, memory consolidation, immune function, and metabolic readiness. It is separate from the general diurnal cortisol rise.
Healthy CAR
30-50% spike
Strong morning peak, sharp decline by afternoon. Indicates robust HPA axis function.
Blunted CAR
< 20% spike
Flat morning cortisol. Seen in burnout, chronic fatigue, PTSD, and prolonged stress.
Exaggerated CAR
> 75% spike
Excessive morning cortisol. Seen in anxiety, anticipatory stress, and depression.
Where to Test
You do not need a doctor's referral to get comprehensive hormone testing. These are the most reputable direct-to-consumer options available.
| Provider | Type | Best For | Price |
|---|---|---|---|
| Marek Health | Blood (comprehensive panels) | Men and women seeking comprehensive blood panels with physician guidance. Best value for thorough testing. | $250-600 |
| DUTCH Test (Precision Analytical) | Dried urine | Complex hormonal cases, estrogen metabolism assessment, cortisol pattern analysis, women with PCOS or perimenopause. | $300-500 |
| Quest Diagnostics / Labcorp | Blood (walk-in or physician-ordered) | Basic hormone panels when ordered by your physician. Most affordable with insurance coverage. | $50-300 (insurance dependent) |
| Ulta Lab Tests | Blood (direct-to-consumer via Quest) | Targeted follow-up testing on specific markers. Budget-friendly when you know exactly which tests you need. | $30-250 (per test) |
| ZRT Laboratory | Blood spot + saliva + dried urine | At-home collection convenience. Good saliva cortisol panels. Women seeking cycle-timed hormone testing without clinic visits. | $150-400 |
| Life Extension / LEF Blood Tests | Blood (via Labcorp) | Annual comprehensive blood panels at an affordable price. Well-established and reliable. | $100-350 |
Marek Health
$250-600Blood (comprehensive panels)
Extremely detailed male and female hormone panels. Includes total T, free T, E2, SHBG, thyroid, metabolic markers, and more. Physician-reviewed. Telemedicine consults available.
Best for: Men and women seeking comprehensive blood panels with physician guidance. Best value for thorough testing.
DUTCH Test (Precision Analytical)
$300-500Dried urine
The gold standard for comprehensive hormone metabolite testing. Maps estrogen pathways, cortisol diurnal pattern, organic acids. Detailed PDF report with interpretive ranges.
Best for: Complex hormonal cases, estrogen metabolism assessment, cortisol pattern analysis, women with PCOS or perimenopause.
Quest Diagnostics / Labcorp
$50-300 (insurance dependent)Blood (walk-in or physician-ordered)
Largest lab networks with thousands of draw sites. Insurance often accepted. Standard reference ranges. Available everywhere.
Best for: Basic hormone panels when ordered by your physician. Most affordable with insurance coverage.
Ulta Lab Tests
$30-250 (per test)Blood (direct-to-consumer via Quest)
Order specific tests individually without a physician visit. Results in 1-2 days. Uses Quest labs. No appointment needed at most locations.
Best for: Targeted follow-up testing on specific markers. Budget-friendly when you know exactly which tests you need.
ZRT Laboratory
$150-400Blood spot + saliva + dried urine
Multi-method testing with at-home collection kits. Excellent saliva cortisol curves. Blood spot testing for hormones and metabolic markers. Physician-quality results from home.
Best for: At-home collection convenience. Good saliva cortisol panels. Women seeking cycle-timed hormone testing without clinic visits.
Life Extension / LEF Blood Tests
$100-350Blood (via Labcorp)
Curated hormone panels at competitive prices. Male and female panels include key hormones + metabolic markers. Long track record. Member discounts available.
Best for: Annual comprehensive blood panels at an affordable price. Well-established and reliable.
Important: Direct-to-consumer testing gives you data, but interpretation requires expertise. For complex results — especially DUTCH tests, abnormal thyroid panels, or suspected endocrine disorders — work with a knowledgeable provider. Testing is the easy part; building the right action plan from the results is where the value lives.
How Often
Hormones are not static. Testing at the right intervals ensures you catch changes early and track the effectiveness of your protocols without overtesting.
Full blood panel (testosterone total + free, E2, progesterone, DHEA-S, cortisol, thyroid, insulin, SHBG, LH, FSH, IGF-1). Consider DUTCH if complex symptoms.
You cannot optimize what you do not measure. Baseline establishes your starting point and identifies which hormones are out of range.
Retest primary hormones of concern (e.g., total/free T, cortisol, thyroid). No need to retest everything unless warranted.
Most lifestyle interventions (sleep, exercise, nutrition, supplementation) require 8-12 weeks to produce measurable hormonal changes. Testing too early wastes money.
Targeted tests based on what you are optimizing. Track trends rather than reacting to single readings.
Hormones fluctuate day to day. What matters is the trajectory across multiple time points. Quarterly testing while dialing in protocols is the sweet spot.
Core panel to confirm levels remain in optimal range. Annual comprehensive panel (add IGF-1, full thyroid, DUTCH if indicated).
Once your hormones are in the optimal range and you feel good, biannual testing catches any drift before it becomes symptomatic. An annual deep dive ensures nothing is missed.
Full retest after major life changes: new medication, significant weight gain/loss, major surgery, prolonged illness, new stress, menopause onset, stopping birth control.
Major physiological changes can rapidly shift hormonal balance. Retesting provides a new baseline for the changed context.
Expert Guidance
Hormone testing generates data. A skilled provider turns that data into a personalized action plan. Here is how to find and work with the right provider.
Endocrinologist
Board-certified hormone specialist. Best for complex cases, pituitary disorders, and TRT management. May have long wait times.
Functional Medicine (IFM)
Trained in root-cause medicine and comprehensive testing. Excellent for DUTCH interpretation and holistic hormone optimization.
Naturopathic Doctor (ND)
Hormone specialization available. Often more time per visit than MDs. Skilled in integrative approaches.
Anti-Aging / Longevity MD
A4M-certified. Focus on optimizing hormone levels for peak performance and longevity. Tend to use optimal (not just standard) ranges.
Telehealth Hormone Clinics
Marek Health, Defy Medical, and similar services offer remote consultations with hormone-specialized physicians. Convenient and often well-versed in comprehensive testing.
Ask your provider: “Do you order free testosterone, SHBG, full thyroid panel (TSH + Free T3 + Free T4 + Reverse T3 + antibodies), and fasting insulin as part of your standard hormone workup?” If the answer is no — if they only order TSH and total testosterone — you need a different provider. This is not about being difficult. It is about getting the data you need to make informed decisions about your health.
FAQ
For most people, a comprehensive blood panel is the best starting point. For men, this means total testosterone, free testosterone, SHBG, estradiol, LH, FSH, thyroid (TSH, Free T3, Free T4), fasting insulin, and DHEA-S — all drawn fasting between 8-10 AM. For women, add progesterone (timed to cycle day 21) and consider FSH if perimenopause is suspected. This gives you a broad hormonal landscape before deciding if advanced testing (DUTCH, saliva) is needed. Start simple, go deeper based on results.
It depends on your situation. If your basic blood work shows clearly low testosterone or obvious thyroid dysfunction, you likely do not need a DUTCH test — the diagnosis and treatment path is straightforward. DUTCH becomes invaluable when: (1) blood work looks 'normal' but you have persistent symptoms, (2) you want to assess estrogen metabolism pathways (important for breast cancer risk), (3) you suspect adrenal dysfunction and need the full cortisol diurnal curve with metabolites, or (4) you want a comprehensive view of how your body processes hormones, not just how much it produces. For complex cases, the DUTCH test often reveals what blood tests miss.
Testosterone and cortisol both follow a diurnal (circadian) rhythm. Testosterone peaks between 6-10 AM and can drop 30-40% by late afternoon. Cortisol peaks within 30-60 minutes of waking and should decline throughout the day. Testing at 2 PM could show a 'normal' low-range testosterone that is actually concerning — because it should have been much higher that morning. Standardizing the draw time to 8-10 AM fasting ensures your results are comparable to reference ranges (which are based on morning draws) and comparable to your future tests.
Standard reference ranges are based on the 2.5th to 97.5th percentile of the testing population — which includes sick, elderly, obese, and chronically stressed individuals. A 35-year-old man with a total testosterone of 350 ng/dL is technically 'normal' but is in the bottom 5% for his age group and almost certainly symptomatic. Optimal ranges are narrower and based on the levels associated with the best health outcomes, lowest disease risk, and highest quality of life. For example, optimal total T for men is 500-900 ng/dL, optimal TSH is 1.0-2.0 mIU/L, and optimal fasting insulin is 2-6 uIU/mL — all significantly tighter than standard ranges.
Yes. Direct-to-consumer (DTC) testing has made comprehensive hormone panels accessible without a physician visit. Companies like Marek Health, Ulta Lab Tests, and Life Extension allow you to order blood work directly, visit a local lab (Quest or Labcorp), and receive results online. DUTCH tests can be ordered directly from Precision Analytical or through functional medicine practitioners. However, interpreting results — especially complex panels — is significantly more effective with a knowledgeable provider (endocrinologist, functional medicine doctor, or hormone-literate naturopath). Testing is easy; interpretation and action planning require expertise.
The menstrual cycle creates predictable hormone fluctuations that make timing critical. Day 1-5 (early follicular): estradiol and progesterone are at their lowest — this is when FSH and LH baseline are best captured. Day 3 is the standard for baseline E2, FSH, and LH. Day 12-14 (ovulation): LH surges, estradiol peaks. Day 19-22 (mid-luteal): progesterone peaks. Testing progesterone at the wrong time (e.g., day 8) will show a falsely low result. The DUTCH test is ideally collected during the luteal phase (day 19-22) to capture the full hormone picture. Women on hormonal birth control cannot accurately assess natural hormone production — the pill suppresses the HPG axis.
The cortisol awakening response is a distinct 30-50% surge in cortisol that occurs within 30 minutes of waking. It is separate from and in addition to the normal diurnal cortisol peak. The CAR is controlled by the hippocampus and reflects your brain's anticipation of the day's demands. A healthy CAR means your HPA axis is functioning properly. A blunted CAR (flat morning cortisol) is seen in burnout, chronic fatigue syndrome, and prolonged stress. An exaggerated CAR is seen in anxiety and anticipatory stress. The CAR can only be captured by saliva or DUTCH testing with a sample taken within 30 minutes of waking — a standard 8 AM blood draw misses it entirely.
Some supplements directly affect test results and should be paused. Biotin: stop 48-72 hours before any thyroid blood test (biotin interferes with the assay and can cause false results). DHEA supplements: will artificially elevate DHEA-S levels. Ashwagandha and adaptogenic herbs: can modulate cortisol and thyroid markers. Testosterone boosters: will affect testosterone results. However, if you want to know whether your current regimen is working, test while on the supplements. Discuss with your provider. The key rule: be consistent between tests. If you tested on supplements last time, test on them this time for comparable results.
Sex Hormone Binding Globulin (SHBG) is a protein produced by the liver that binds testosterone and estradiol, rendering them inactive. Think of SHBG as a hormonal sponge — the more SHBG you have, the less free (active) hormone is available to your tissues. A man with total testosterone of 700 ng/dL but very high SHBG might have the free testosterone of a man at 400 ng/dL. This is why testing free testosterone alongside total is essential. High SHBG is driven by aging, hyperthyroidism, very low carb diets, and liver conditions. Low SHBG is driven by insulin resistance, obesity, and hypothyroidism. SHBG is the metabolic-hormonal bridge that connects your insulin sensitivity to your sex hormone availability.
Most conventional primary care physicians test TSH only (not the full thyroid panel) and consider any testosterone above 300 ng/dL 'normal.' To find a hormone-literate provider: (1) Look for board-certified endocrinologists who specialize in reproductive endocrinology or male hormone health. (2) Functional medicine practitioners (IFM-certified) are trained in comprehensive hormone assessment including DUTCH interpretation. (3) Naturopathic doctors (NDs) with hormone specialization. (4) Anti-aging / longevity medicine practitioners (A4M-certified). (5) Telehealth hormone clinics (Marek Health, Defy Medical, TRT Nation for men). The key test: ask if they order free testosterone, full thyroid panel, and fasting insulin. If they only order total T and TSH, they are not doing comprehensive hormone assessment.
Androgens
The 6 pillars of natural testosterone optimization: sleep, training, nutrition, cold, stress, and micronutrients.
Biomarkers
The 20 key metrics to track for healthspan, including blood, body composition, cardiovascular, and cognitive markers.
Inflammation
Inflammatory biomarkers, anti-inflammatory nutrition, and protocols to resolve chronic inflammation.
Hormone testing generates data. A CryoCove coach turns that data into a personalized optimization plan — which tests to order, how to interpret results, which lifestyle protocols to prioritize, and how to track progress over time.