For a transgender male who has been on testosterone enanthate 25 mg intramuscularly weekly for five months, what is the appropriate maximum dose to titrate to?

Testosterone Dose Titration for Transgender Male Patient

After 5 months on testosterone enanthate 25 mg weekly, you can titrate up to 50 mg weekly now, with a plan to increase to 100 mg weekly at 6 months, and ultimately reach a maintenance dose of 100-200 mg every 2 weeks (or 50-100 mg weekly) by 9-12 months.

Dosing Algorithm Based on Evidence

The most recent high-quality research 1 demonstrates a conservative, stepwise protocol that achieves excellent gender congruence while minimizing adverse effects:

• Months 0-3: 25 mg/month (your patient has completed this phase at 25 mg/week, which is actually more aggressive)
• Months 3-6: 50 mg/month
• Months 6-9: 100 mg/month
• Month 9+: 250 mg/month

Since your patient is receiving weekly rather than monthly dosing, the equivalent progression would be:

1. Current (Month 5): Continue 25 mg weekly OR increase to 50 mg weekly
2. Month 6: Increase to 50 mg weekly (if not already done)
3. Month 9-12: Increase to 100 mg weekly or transition to 100-200 mg every 2 weeks

Target Testosterone Levels

Measure testosterone levels midway between injections and aim for 400-700 ng/dL 2. The Endocrine Society guidelines specifically state that for injectable testosterone enanthate or cypionate, if testosterone is >700 ng/dL or <400 ng/dL, you should adjust dose or frequency 2.

For transgender males specifically, the goal is to achieve testosterone levels in the typical physiological range for cisgender men (300-1,000 ng/dL), with most protocols targeting the mid-normal range 3.

Monitoring Requirements at This Stage

Since your patient is at 5 months, you should:

• Check testosterone level now (midway between injections) before titrating
• Check hematocrit - this is the earliest adverse effect, appearing as early as month 9 1
• Monitor estradiol - should be <50 pg/mL 4
• Assess for menstrual cessation - should have occurred by now in most patients 1, 5

Evidence Supporting Conservative Titration

The 2026 study 1 of 40 transgender males using this conservative protocol showed:

• 70% achieved appearance congruence and 80% achieved gender identity acceptance
• No significant cardiovascular risk changes (lipids remained stable)
• Only hematocrit showed significant changes, and only by month 9
• Sufficient androgenization markers (free androgen index, androstanediol glucuronide increased appropriately)

This contrasts with older protocols that started at full replacement doses (200 mg every 2 weeks) 6, 7, which while effective, may carry unnecessary early risks.

Maximum Maintenance Dose

The FDA-approved maximum for testosterone enanthate is 400 mg per month 8, though doses above this are rarely indicated. For transgender males specifically:

• Standard maintenance: 100-200 mg every 2 weeks (equivalent to 50-100 mg weekly) 9, 2
• Alternative: 250 mg every 3 weeks 5
• Some protocols use up to 250 mg every 2 weeks, but this is at the higher end

Recent evidence 10 demonstrates that low-dose testosterone (≤62.5 mg/week) achieves adequate muscular development and comparable outcomes to higher doses, with the main difference being slightly faster initial muscle mass gains with higher doses.

Common Pitfall to Avoid

Do not escalate dose based solely on patient request for "faster results." The 2013 dose-response study 5 showed that while higher doses produce earlier onset of physical changes (within 1 month), by 6 months all three dose groups (125 mg every 2 weeks, 250 mg every 2 weeks, and 250 mg every 3 weeks) achieved equivalent therapeutic effects. Rushing the dose increases risk of polycythemia, cardiovascular effects, and makes laboratory monitoring more difficult to interpret.

Practical Next Steps

1. Order labs now: Total testosterone (midway between injections), free testosterone, estradiol, CBC (hematocrit), lipid panel
2. If testosterone is 400-700 ng/dL: Continue current dose and recheck in 3 months
3. If testosterone is <400 ng/dL: Increase to 50 mg weekly now
4. If testosterone is >700 ng/dL: Maintain current dose (unusual at 25 mg weekly)
5. Plan next increase to 100 mg weekly at month 9-12 based on testosterone levels and clinical response

The weekly dosing schedule your patient is on provides more stable levels than every-2-week dosing 11, which is advantageous for monitoring and symptom stability.