FSH blood test
A pituitary hormone that drives sperm production in men.
- Typical range (adult men)
- 1.5–12.4 mIU/mL
- Panel
- Hormones
- Also called
- Follicle-stimulating hormone
Reference ranges vary between labs; use the range on your own report. Results need to be read by a doctor alongside your symptoms and other tests.
Why it’s tested
Read with LH to judge fertility and whether the hormone axis is suppressed.
What can raise it
- Testicular damage or failure
What can lower it
- Suppression by outside testosterone or anabolic steroids
- Pituitary problems
Getting an accurate result
- Test in the morning, especially for hormones, which run highest early in the day.
- Stay hydrated, and test at the same lab and time of day each time so results compare fairly.
Compounds that affect FSH
Monitored with these, based on their known properties:
- Testosterone Cypionate
- Testosterone Enanthate
- Testosterone Propionate
- Deca-Durabolin (Nandrolone Decanoate)
- NPP (Nandrolone Phenylpropionate)
- Trenbolone Acetate
- Trenbolone Enanthate
- Equipoise (Boldenone Undecylenate)
- Masteron (Drostanolone Propionate)
- Masteron Enanthate (Drostanolone Enanthate)
- Primobolan (Methenolone Enanthate)
- Dianabol (Methandrostenolone)
Other hormones tests
Questions
What is a normal FSH level?
A typical adult male reference range is 1.5–12.4 mIU/mL. Ranges differ for women, by age and between labs, so compare with the range printed on your report.
What does high FSH mean?
Common reasons include testicular damage or failure. One result outside the range isn't a diagnosis: a doctor will look at it with your other markers and history.
What does low FSH mean?
Common reasons include suppression by outside testosterone or anabolic steroids and pituitary problems.