Testosterone (Total)
This test measures the total amount of testosterone in your blood — both the bound (inactive) and free (active) fractions combined.
Total testosterone is the headline number on your hormone panel. It includes both SHBG-bound testosterone (inactive) and free testosterone (the 2–3% that actually enters cells). A healthy total T is necessary but not sufficient — if your SHBG is high, most of your testosterone is locked up and unavailable.
Good for you if: You're a man experiencing fatigue, low libido, poor recovery, brain fog, or mood changes — or simply want to track your hormonal health as you age.
Dive deeper into the scienceWhat is this test?
Total testosterone measures the combined amount of all testosterone in your blood. About 44% is bound tightly to SHBG (sex hormone binding globulin) and is essentially inactive. Another 54% is loosely bound to albumin. Only 2–3% circulates as free testosterone — the fraction that actually enters cells and does the work.
Total T is the starting point for hormonal assessment, but it's an incomplete picture on its own. Two men with the same total T of 550 ng/dL can have vastly different symptoms if one has high SHBG (locking up most of the testosterone) and the other has normal SHBG with plenty of free T.
What your number means
| Total Testosterone | What it means | What to do |
|---|---|---|
| <264 ng/dL | Clinically low — hypogonadal | Physician evaluation; rule out secondary causes; consider TRT |
| 264–400 ng/dL | Low-normal — often symptomatic | Aggressive lifestyle optimisation; retest in 3 months; physician if no improvement |
| 400–500 ng/dL | Adequate — room to improve | Lifestyle optimisation: sleep, training, nutrition |
| 500–900 ng/dL | Optimal | Maintain; test annually |
| >900 ng/dL | High-normal | Great if natural; monitor haematocrit if on TRT |
The lab reference range (264–916 ng/dL) includes data from unhealthy, obese, and elderly men — that's why the lower end is misleadingly low. A 30-year-old man at 280 ng/dL is "in range" but almost certainly symptomatic and metabolically suboptimal.
How to improve it
Sleep 7–9 hours — testosterone is produced primarily during sleep. Just one week of 5-hour nights drops testosterone by 10–15%. This is the single most impactful free intervention.
Resistance training — compound lifts (squats, deadlifts, bench press) at moderate-to-heavy loads acutely raise testosterone and chronically improve hormonal profile. Endurance-only exercise can actually lower T.
Lose excess body fat — adipose tissue contains aromatase, which converts testosterone to estradiol. Dropping from 25% to 15% body fat can increase total T by 100–200 ng/dL.
- Vitamin D — deficiency is associated with low T; supplement 4,000–5,000 IU daily if below 50 ng/mL
- Zinc — 25–30 mg daily; deficiency directly impairs testosterone synthesis
- Magnesium — 200–400 mg glycinate daily; supports testosterone, especially in active men
- Ashwagandha — KSM-66 600mg daily; increases total T by 15–17% in multiple RCTs
- Tongkat Ali — 200–400mg daily; modest testosterone increase, especially in stressed or older men
- Stress management — cortisol directly suppresses GnRH and testosterone production
Want to track your testosterone?
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Get early accessFrequently Asked Questions
What is a good total testosterone level for men?
Labs accept 264–916 ng/dL as normal — but the low end was set using data from older, often unhealthy men. For a man under 50, optimal is 500–900 ng/dL. Below 400 is suboptimal and often symptomatic. Always test alongside free testosterone and SHBG for the full picture.
Why is my testosterone low?
The most common causes: poor sleep (even 5 hours/night drops testosterone 10–15%), excess body fat (aromatase converts testosterone to estrogen), chronic stress (cortisol suppresses the HPG axis), sedentary lifestyle, and nutrient deficiencies (vitamin D, zinc, magnesium). Fix these before considering TRT.
Can I raise testosterone naturally?
Yes, significantly. Resistance training (especially compound lifts), losing excess body fat, sleeping 7–9 hours, managing stress, and correcting deficiencies in vitamin D, zinc, and magnesium can increase total testosterone by 100–300 ng/dL. Ashwagandha and tongkat ali have supporting clinical evidence.
When should I test testosterone?
Always test in the morning (7–10 AM) — testosterone peaks in the early morning and drops 20–30% by afternoon. Fast overnight. Test total T, free T, SHBG, LH, and estradiol together for a complete hormonal picture. If results are borderline, repeat before making decisions.
How it's measured
A morning blood draw (7–10 AM) after an overnight fast. Labs use immunoassay (most common) or LC-MS/MS (gold standard, more accurate at low levels). The test costs ₹400–800 at Indian labs. For a complete picture, request total T, free T, SHBG, LH, FSH, estradiol (E2), and prolactin in the same draw.
Clinical ranges vs optimal ranges
The clinical reference range (264–916 ng/dL) was established using population data that includes unhealthy, obese, and elderly men. A healthy 25-year-old man should have significantly higher testosterone than what the lower reference limit suggests. Studies of healthy young men show median total T of 600–700 ng/dL — that's the benchmark, not 264.
The 2017 Endocrine Society guidelines define hypogonadism at below 264 ng/dL (measured twice). But many men become symptomatic below 400 ng/dL, especially if their free T is also low.
India-specific considerations
Limited Indian data suggests testosterone levels in urban Indian men may average 10–15% lower than Western populations — driven by higher rates of vitamin D deficiency, vegetarian diets (lower zinc and cholesterol), sedentary lifestyles, and stress. Indian lab reference ranges often mirror Western ranges without adjustment.
Testing is widely available (₹400–800) and most labs offer it as part of male hormone panels. Use LC-MS/MS methodology where available — immunoassay can have significant cross-reactivity.
Connected supplements
- Ashwagandha (KSM-66) — 600mg daily; 15–17% total T increase in RCTs; also lowers cortisol
- Tongkat Ali — 200–400mg daily; supports testosterone especially in stressed or aging men
- Vitamin D3 — correcting deficiency can raise T by 20–25%; 4,000–5,000 IU daily
- Zinc — 25–30mg daily; required for testosterone synthesis; common deficiency in vegetarians
- Boron — 6–10mg daily; may reduce SHBG and increase free testosterone
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