One of the most common questions new TRT patients have is "how much testosterone will I need?" The honest answer: it depends on your body, your goals, and your response. But there are well-established starting points and adjustment principles that help you and your provider find the right dose efficiently.
Typical Starting Doses
For testosterone cypionate (the most commonly prescribed injectable form in the U.S.), standard starting doses fall within a well-defined range:
| Starting Range | Weekly Dose | Typical Patient |
|---|---|---|
| Conservative start | 80-100 mg/week | Older men, cardiovascular risk factors, very low baseline |
| Standard start | 100-140 mg/week | Most men; the most common starting range at specialized clinics |
| Higher start | 140-200 mg/week | Younger men with very low T, high SHBG, or rapid metabolizers |
Most TRT-specialized clinics start in the 100-140 mg/week range and adjust based on follow-up bloodwork at 6-8 weeks. The old standard of 200mg every two weeks has been largely abandoned by modern providers because it creates unacceptable peak-and-trough fluctuations.
Injection Frequency: Why More Often Is Usually Better
Testosterone cypionate has a half-life of approximately 8 days. This means that after injection, levels peak within 48-72 hours and then steadily decline. The frequency of injection determines how dramatic the peaks and valleys are:
Once every 2 weeks (200mg): The old standard. Creates massive peaks (potentially supraphysiologic) followed by deep troughs. Most men feel great for 3-4 days and terrible for the last 4-5 days of each cycle. Not recommended by modern TRT providers.
Once per week (100-150mg): Better than biweekly. Still creates noticeable peaks and valleys, but manageable for many men. A reasonable starting protocol.
Twice per week (50-75mg per injection): The current standard of care at most specialized clinics. Split dosing every 3.5 days (e.g., Monday morning and Thursday evening) produces much more stable serum levels, reduced estrogen conversion at peak, and more consistent energy and mood throughout the week.
Every other day or daily (microdosing): The most stable levels possible. Some men who are particularly sensitive to fluctuations — or who experience estrogen issues on less frequent schedules — benefit from daily subcutaneous microdoses of 14-20mg. This mimics the body's natural daily testosterone production pattern most closely.
The Rule of Thumb
Splitting your weekly dose into more frequent, smaller injections produces more stable testosterone levels, less estrogen conversion, fewer mood swings, and a more consistent daily experience. Most men do best on a twice-weekly schedule at minimum.
The Dose Adjustment Process
Finding your optimal dose is an iterative process, not a one-time decision:
Week 0: Start at your prescribed dose and frequency.
Weeks 6-8: First follow-up bloodwork. Draw blood at trough (morning before your next injection). Your provider will review total T, free T, estradiol, hematocrit, and how you're feeling subjectively.
Adjustment logic:
- Trough total T below target + still symptomatic → increase dose by 10-20mg/week
- Trough total T in range + feeling good → maintain current dose
- Estradiol elevated + symptoms (water retention, mood) → increase injection frequency or lower dose slightly
- Hematocrit creeping up → consider increasing frequency, lowering dose, or adding therapeutic phlebotomy
Weeks 12-16: Second round of bloodwork to confirm the adjustment is working. Most men are reasonably "dialed in" by this point, though fine-tuning can continue.
Ongoing: Once stable, bloodwork every 3-6 months to confirm levels remain in range and monitor safety markers.
What "Dialed In" Looks Like
You're dialed in when:
- Your trough total testosterone is consistently 600-900 ng/dL (or wherever your provider and you have agreed feels optimal)
- Free testosterone is in the upper quartile of the reference range
- Estradiol is 20-35 pg/mL — sufficient for health benefits without estrogenic side effects
- Hematocrit is below 52%
- You feel consistently good throughout the week — stable energy, mood, libido, and cognitive function without significant day-to-day fluctuation
- You're not relying on ancillary medications (like aromatase inhibitors) to manage preventable side effects
The last point is important: many side effects attributed to TRT are actually symptoms of suboptimal dosing or frequency. Estrogen issues, for example, are often better managed by increasing injection frequency (which reduces peak-dose aromatization) than by adding an aromatase inhibitor.
Common Dosing Mistakes
Starting too high: More isn't better. Starting at 200mg/week when 120mg would have been sufficient creates unnecessary side effects (elevated estrogen, hematocrit spikes) that then require additional medications to manage. Start conservative, titrate up based on labs.
Chasing a number instead of symptoms: The goal of TRT is to feel better, not to hit a specific testosterone number. Some men feel great at 600 ng/dL; others need 800. Let symptom resolution guide your target, not a predetermined number.
Injecting too infrequently: If you're on a biweekly protocol and feel like you're on a roller coaster, the solution is almost always more frequent injections, not a higher dose.
Adjusting too quickly: Testosterone takes 4-6 weeks to reach steady state after any dose change. Don't change your dose every week based on how you feel — give each adjustment time to stabilize before evaluating.
Ignoring bloodwork: How you feel matters, but so do your labs. Feeling great while your hematocrit is 55% is still a problem. Regular monitoring is non-negotiable.
Work with Providers Who Know Dosing
The right clinic will help you find your optimal dose through careful titration and regular lab monitoring — not a one-size-fits-all approach.
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