What did @teebzfx actually say?
The creator got a home testosterone test through a UK company called Manual, received a total testosterone result of 14.7, and was told this is "below average" with a "good" range of 18 to 25. He also flagged that his free testosterone is low and that his albumin is "extremely high." His read on albumin, that it "basically" represents gut and liver protein production, came with some skepticism from him too. Credit where it's due: he didn't just accept the result. He called his GP to get NHS blood work done and plans to compare the two. That's actually the right instinct.
He also flagged that Manual immediately tried to upsell him a 90-pound package once his results came back low. That detail matters, and we'll come back to it.
Does the science back this up?
The numbers here are more nuanced than the video makes them sound. A total testosterone of 14.7 nmol/L is not clearly "low" by most clinical standards. The European Male Ageing Study (Wu et al., 2010, NEJM) and the European Association of Urology guidelines place the lower threshold for symptomatic hypogonadism at around 12 nmol/L, with a grey zone between 8 and 12. The British Society for Sexual Medicine (BSSM) guidelines use 12 nmol/L as their cut-off for considering treatment. At 14.7, he is technically within the lower end of the normal adult male reference range, which most labs set between roughly 8.6 and 29 nmol/L.
Free testosterone matters too. Total testosterone can be misleading if sex hormone-binding globulin (SHBG) is high, which would sequester more testosterone and lower the biologically active fraction. If his free T is genuinely low and his albumin is elevated, that's a clinically relevant picture, but it still needs proper clinical context, not an automated upsell.
What did they get wrong (or right)?
The albumin explanation needs correcting. He said albumin is "basically your gut and liver" and linked it to protein intake. Albumin is a protein produced by the liver, yes, but its relevance in a testosterone panel is different: albumin loosely binds testosterone, and high albumin can actually increase total testosterone while keeping free testosterone lower. It is not a marker of dietary protein intake in this context. That explanation was wrong.
His claim that "the average or good test level is clearly 18 to 25" is also off. That range has no consensus backing in the clinical literature. NHS and BSSM guidelines do not use 18 to 25 nmol/L as a standard. Manual appears to be using its own proprietary "optimal" range, which is a common tactic among direct-to-consumer hormone testing companies. It is not the same as clinical hypogonadism criteria.
What he got right: his skepticism about the upsell is well-founded. Research on direct-to-consumer hormone testing companies, including a 2023 JAMA Internal Medicine commentary by Handelsman, has flagged that financial incentives in these models can drive over-diagnosis of "low T."
What should you actually know?
A single testosterone result from a home test kit is not a diagnosis. The Endocrine Society (Bhasin et al., 2018, Journal of Clinical Endocrinology and Metabolism) recommends that low testosterone be confirmed on at least two separate morning samples before any clinical decision is made. Testosterone levels follow a diurnal rhythm, peaking in the morning and dropping by up to 35% by afternoon. The time of the test matters.
If you genuinely have symptoms, the right path is what this creator is already doing: get NHS or GP-ordered bloods, ideally a morning fasting sample that includes total testosterone, free testosterone, LH, FSH, SHBG, prolactin, and a full blood count. That gives a clinical picture, not just a number a subscription company can act on.
- TRT is a legitimate treatment for confirmed hypogonadism, but "confirmed" means clinical symptoms plus biochemical evidence, not a single result from a commercial kit.
- The reference range used by Manual (18 to 25 nmol/L) does not appear in NHS, BSSM, or Endocrine Society guidelines. Understand whose numbers you're looking at.
- Elevated albumin in a hormone panel does not mean your protein intake is high. It has a specific relevance to how testosterone is bound in your blood.