TRT Dosing Guide 2026: Testosterone Cypionate, Enanthate, and Gel Protocols

TRT Dosing Is Not One-Size-Fits-All

The right testosterone dose depends on your baseline labs, symptom severity, body composition, conversion rates, and therapeutic goals. What works for a 45-year-old with a total T of 280 ng/dL won’t be the same as for a 58-year-old with 410 ng/dL but severely low free T due to high SHBG.

This guide covers standard dosing protocols for the most commonly prescribed testosterone forms, typical titration schedules, and how Viking approaches dose optimization.

Testosterone Cypionate — The Standard Injectable

Testosterone cypionate is the most widely prescribed form in the U.S. It has a half-life of approximately 8 days, allowing weekly or twice-weekly injections.

Why split dosing? Twice-weekly or EOD injections produce more stable serum testosterone levels with lower peak-to-trough variation. This often reduces estrogen-related side effects and produces more consistent energy and mood.

Testosterone Cypionate Titration Protocol

1. Start at 100-150 mg/week
2. Recheck labs at 6 weeks (total T, free T, estradiol, hematocrit, PSA if >50)
3. Adjust dose based on labs + symptom response
4. Recheck at 12 weeks
5. Once stable, quarterly labs

Testosterone Enanthate

Enanthate and cypionate are functionally nearly identical. Enanthate has a half-life of 4-5 days versus cypionate’s 8 days, but in practice, the difference is clinically negligible at weekly dosing.

• Same dosing ranges as cypionate
• Often preferred in Europe and internationally
• Viking uses either depending on availability and patient preference

Testosterone Gel (Topical)

Gels offer daily application and avoid injections. They’re preferred by men who are needle-averse or have occupations that preclude frequent injections.

Key limitation: Gels produce lower peak levels and more variable absorption than injectables. Skin-to-skin transfer risk (to women and children) requires care with application and covering the area.

What Determines the Right Dose?

Baseline Total Testosterone

Men with total T below 200 ng/dL typically need higher doses to reach therapeutic targets. Men with 350-400 ng/dL but significant symptoms (often high SHBG cases) may respond well to lower doses.

SHBG Level

High SHBG binds free testosterone and requires higher total T targets to achieve adequate free T. A man with SHBG of 70 nmol/L may need total T of 900+ ng/dL to achieve adequate free T, while a man with SHBG of 25 nmol/L achieves good free T at 600 ng/dL total.

Aromatization Rate

Some men convert testosterone to estradiol rapidly (high aromatase activity). These men may need lower doses combined with an aromatase inhibitor, or more careful titration to avoid high E2 symptoms (water retention, mood changes, reduced libido).

Hematocrit Response

Testosterone stimulates red blood cell production. If hematocrit rises above 52-54%, dose reduction or therapeutic phlebotomy may be necessary. This is one reason Viking monitors hematocrit at every lab draw.

Target Lab Values on TRT

Viking’s Dosing Philosophy

We start conservative, titrate based on labs and symptoms, and prioritize free testosterone (the biologically active fraction) over total testosterone. We see too many patients who come to us from clinics that got their total T to 900 ng/dL but never checked free T — and the patient still feels terrible because SHBG is 75 and free T is inadequate.

We also don’t chase arbitrary numbers. The goal is symptom resolution with labs in safe ranges, not hitting a testosterone leaderboard.