TRT testosterone levels: what 'that high' actually means clinically

What did @marksandorfitness actually say?

The creator posted bloodwork showing a free testosterone reading of 61.2 nmol/L, which he converted to 1,765 ng/dL, on a weekly dose of 125mg testosterone enanthate. His takeaway: even at what he called a "TRT dose," his levels came back nearly double the top of the normal range (300-1,000 ng/dL). He concluded, "technically, I'm still blasting." He also noted that TRT doses typically fall between 120 and 200mg per week and argued there's massive individual variation in how people respond to the same dose.

To be clear about what he's measuring: this appears to be total testosterone, not free testosterone, despite his repeated use of the phrase "free testosterone." That matters, and we'll get into it.

Does the science back this up?

The core observation, that identical doses produce wildly different serum levels across individuals, is well-supported. The individual variation point is probably the most accurate thing in the video.

Pharmacokinetic research confirms significant inter-individual variability in testosterone levels after exogenous administration. A study by Bhasin et al. (2001, New England Journal of Medicine) demonstrated substantial dose-response variation in testosterone injections, with serum levels differing considerably between men on the same dose. More recently, Ramasamy et al. (2014, Journal of Urology) documented how factors including age, body composition, SHBG levels, and injection frequency all influence peak and trough serum concentrations. The range of "normal" on TRT is genuinely wide, and his point about discrepancy in what counts as TRT for one person versus another is legitimate.

His level of 1,765 ng/dL is well above the standard laboratory reference range of 300-1,000 ng/dL. Whether that reading represents a peak (taken shortly after injection) or a trough matters enormously for clinical interpretation, and he doesn't mention when he drew the blood.

What did they get wrong (or right)?

The terminology error is significant. He repeatedly calls this his "free testosterone" but the unit he cites, nmol/L converted to ng/dL, is consistent with total testosterone measurement. Free testosterone is typically reported in pg/mL or pmol/L at a fraction of those numbers. Calling it free testosterone when it's almost certainly total testosterone isn't a minor slip. It's the kind of confusion that misleads viewers who are trying to compare their own labs.

His conversion math is roughly correct. 61.2 nmol/L does convert to approximately 1,764-1,765 ng/dL using the standard conversion factor of 28.842. Credit where it's due.

The claim that "TRT dose is between 120 to 200 milligrams" per week is a reasonable ballpark for clinical practice in North America, though many guidelines suggest starting lower. The Endocrine Society's 2018 clinical practice guidelines recommend 75-100mg weekly (or 150-200mg every two weeks) as a starting point, not 120mg as a floor. His range skews slightly high as a baseline framing.

His conclusion that he is "technically blasting" at 1,765 ng/dL is fair in practical terms. That level exceeds therapeutic targets most clinicians aim for.

What should you actually know?

If you're on TRT and your levels look nothing like your friend's on the same dose, that is not a mistake. It is biology. SHBG (sex hormone-binding globulin) levels, injection timing, metabolism, and even injection site all affect serum concentrations. This is exactly why bloodwork exists and why self-adjusting doses based on someone else's results is a poor idea.

The timing of your blood draw relative to your injection is not a footnote. It determines whether you're seeing a peak or a trough, and the difference can be hundreds of ng/dL on the same protocol. The Endocrine Society recommends drawing labs at the midpoint between injections for weekly dosing to get a representative value.

Levels above 1,000 ng/dL on exogenous testosterone are associated with increased erythrocytosis risk, meaning elevated red blood cell count, which raises cardiovascular concerns with prolonged exposure. Bachman et al. (2010, Journal of Clinical Endocrinology and Metabolism) found hematocrit increases were dose-dependent and more pronounced at supratherapeutic levels. That is a clinically relevant consideration for anyone running consistently elevated levels, regardless of the dose that produced them.

The bottom line

He got the big picture right: individual response to testosterone varies enormously, and dose alone does not determine whether someone is on a therapeutic versus supraphysiologic protocol. The bloodwork comparison is a useful illustration of that point. But calling total testosterone "free testosterone" throughout the video is a meaningful error that muddies the waters for an audience already confused about how to read their own labs. And his framing of 120mg as a standard TRT starting point is on the high end of clinical recommendations. Useful video with one notable terminology failure and some context gaps that matter.