TRT delivery methods compared: what the evidence actually shows

What did @gilletthealth actually say?

The claim is that 90mg of subcutaneous testosterone per week combined with 500 IU of HCG three times a week represents a "significantly higher dose" of total hormonal exposure than a straight 120mg weekly testosterone protocol with no HCG. The creator also dismisses 100 IU of HCG as "pretty insignificant." This is a specific pharmacological argument about total androgenic load, not just testosterone milligrams.

To be fair, the framing matters here. The creator is not saying the numbers are the same. They are making a point about how adding HCG changes the total hormonal picture in a meaningful way, which is a legitimate clinical consideration that gets overlooked when patients or providers focus only on the testosterone dose listed on the prescription.

Does the science back this up?

Partially, yes. HCG stimulates testicular Leydig cells to produce endogenous testosterone and other hormones, so it does contribute to total androgen exposure. But the magnitude of that contribution is where things get complicated, and the creator's specific numbers deserve scrutiny.

A randomized trial by Coviello et al. (2005, Journal of Clinical Endocrinology and Metabolism) showed that HCG doses between 125 and 500 IU given every other day during testosterone suppression produced dose-dependent increases in intratesticular testosterone. The intratesticular levels were substantial, but systemic serum testosterone increases from HCG alone are more modest and highly variable depending on baseline testicular function. Studies by Roth et al. (2013, Fertility and Sterility) confirmed that HCG co-administration does restore intratesticular testosterone, but serum testosterone contributions vary widely across individuals. The blanket claim that 500 IU three times a week reliably pushes a 90mg protocol definitively past 120mg in total androgenic effect is a strong assertion that the literature does not uniformly support.

What did they get wrong (or right)?

They got the directional concept right: HCG is not inert. Dismissing it as just a fertility drug when calculating total hormonal load is a real oversight in clinical TRT discussions. The creator deserves credit for raising that.

Where they overreach is the confidence behind "significantly higher dose" as a generalizable statement. Endogenous testosterone response to HCG is not uniform. Testicular atrophy from prolonged testosterone use, individual Leydig cell sensitivity, and the duration of suppression all affect how much testosterone HCG actually stimulates. A patient who has been on testosterone for years with significant atrophy may produce far less endogenous testosterone from 500 IU HCG than someone newly starting TRT. The creator presents this as a reliable pharmacological math problem, when in reality it is a probability with wide individual variation.

The dismissal of 100 IU as "pretty insignificant" is also unsupported by a specific citation and should not be taken as established clinical consensus.

What should you actually know?

If you are on a combined testosterone plus HCG protocol, your total hormonal exposure is not captured by your testosterone prescription dose alone. That is the valid takeaway here. Any honest clinical assessment of your protocol should include how you feel, your serum lab values including total and free testosterone, estradiol, and LH response, not just the milligrams on your vial.

The more important practical point is this: do not adjust your own doses based on a TikTok comparison between protocol structures. The interaction between exogenous testosterone and HCG involves estradiol conversion, hematocrit changes, and other variables that require monitoring. What looks "lower" on paper can still produce supraphysiologic levels in certain individuals depending on metabolism and aromatase activity. A provider who monitors labs and adjusts accordingly is the appropriate place for this conversation, not a dose equivalency estimate from a short-form video.

• HCG contributes to total androgen load but the serum effect is variable and patient-specific.
• Comparing protocols purely on testosterone milligrams ignores meaningful pharmacological contributors.
• Lab monitoring, not dose math, is how protocol adequacy is actually assessed.

Bottom line

The creator is raising a genuinely underappreciated point about protocol comparisons. The concept is sound. The confidence level applied to the specific numbers is not fully supported by the available evidence, and individual variability makes this kind of blanket equivalency claim unreliable as general guidance. Worth watching. Not worth using to make decisions about your own protocol.