Magno Sex Hormones
FSH on TRT
What the number means, why it moves on a protocol, and what people usually do about it.
What it is
Follicle stimulating hormone drives sperm production. Like LH it falls to near zero on testosterone, which is why fertility drops on TRT.
The range
TRT-aware target
Read against the lab range and the trend
How to read the lab range
Lab range roughly 1.5 to 12 IU/L. Near zero on TRT is expected. High FSH with a normal testosterone points at the sperm-making cells, not the hormone side.
Why it moves on a protocol
- Suppressed by any exogenous androgen.
- HCG keeps intratesticular testosterone up but does not replace FSH; some add it separately for fertility.
What people usually do · not a recommendation
- If children are on the horizon, people plan HCG from the start and talk to a fertility clinic before, not after.
- A sperm analysis tells more than FSH does.
How Magno reads it
Import the PDF or a photo of the report and Magno finds FSH on it, keeps every test on one line, shows the change since the last one, and reads it against TRT-aware thresholds rather than the lab's generic range. The panel it belongs to, Sex Hormones, gets a written verdict with the probable causes and what people usually do.
Read yours
Drop your lab PDF or a photo and get every marker read like this, in plain words. Free, no account, nothing leaves your browser. Save it in the app to see the change since your last test.
Questions people ask
Will FSH recover after TRT?
Usually, over months. The longer the suppression the slower the return, and some men need help from a clinic.
Does HCG bring FSH back?
No. It mimics LH. FSH stays low; fertility protocols sometimes add FSH itself.
Related markers
Not medical advice
This is how experienced TRT users read the number and what they usually do about it. Every decision about your protocol belongs to you and a clinician who knows you.