follicle-stimulating hormone (fsh)
Reproductive EndocrinologyBlood sampleResults 2-3 daysNo fasting
Follicle-Stimulating Hormone (FSH)
Follicle-Stimulating Hormone (FSH) helps control the menstrual cycle and the production of eggs and sperm. This test measures its blood level.
Sample
Blood
Results
2-3 days
Fasting
Not required
Follow-up
Optional add-on
What this test detects
Follicle-Stimulating Hormone (FSH)
ECLIA · serum
Quantitative · mIU/mL
When to get this test
Fertility work-up
Helps assess ovarian function in women and sperm production in men.
Menstrual irregularity
Useful when periods are irregular, absent, or changing.
Menopause assessment
FSH often rises around menopause and supports its evaluation.
How to prepare
01
Your provider may ask for sampling on a specific day of your menstrual cycle.
Common questions
Why is timing in the cycle important?
FSH changes across the menstrual cycle. Drawing the sample on the requested day, often early in the cycle, makes the result easier to interpret.
Is FSH only for women?
No. In men, FSH helps evaluate sperm production as part of a fertility work-up.