Magno
Sex Hormones
Total Testosterone on TRT
What the number means, why it moves on a protocol, and how it sits with related markers.
What it is
Total testosterone is everything in the blood, bound and free. On TRT it is the number most clinicians look at first, and the one that swings most with when you draw the blood.
The range
How to read the lab range
Labs quote a range for men who make their own, roughly 300 to 1000 ng/dL (10 to 35 nmol/L). On a protocol the number depends a lot on timing: a trough draw, the morning of the next injection, reads lower than a peak draw. A peak draw two days after a shot can sit above the lab range.
Why it moves on a protocol
- Dose and ester: more milligrams and shorter esters push peaks higher.
- Draw timing: trough and peak can differ by half.
- Injection frequency: once a week swings more than twice.
- SHBG: high SHBG holds more of the total as bound.
How Magno reads it
Magno keeps every test on one line, against your lab's range, with the change since last time. Pro explains it in plain words. Get Magno for iPhone.
Read yours
Drop your lab PDF or a photo and get every marker explained in plain words. Free, no account, your file never leaves your browser. Track it in the iPhone app to see the change since your last test.
Questions people ask
Is a total testosterone above the lab range dangerous on TRT?
Not by itself. A peak draw can read above range on a normal dose. Clinicians usually read it together with hematocrit, estradiol, blood pressure and how you feel.
Why does my total testosterone change so much between tests?
Mostly timing. A draw near the injection reads higher than one at trough, so tests drawn at different points between injections are hard to compare. Worth raising with your doctor if the numbers jump around.
Related markers
Not medical advice
This explains what the number is and why it moves. It is not medical advice; decisions belong to you and your clinician.