What is this test?
FSH is a pituitary hormone that is involved in egg maturation and sperm formation.
Why might it be ordered?
- For disorders in the menstrual cycle, menopause or difficulties in getting pregnant.
- When evaluating puberty, ovarian or testicular function.
What sample is needed?
A healthcare professional collects a venous blood sample. Depending on the method, the laboratory uses serum or plasma.
How should you prepare?
For women, the day of the cycle may matter. Follow the requested collection schedule and report any hormone treatment. Tell the laboratory about all medicines, hormone treatments, vitamins and supplements you take. Do not stop or change treatment unless your clinician tells you to. Follow any instructions about fasting and the time of collection.
How should you understand the result?
FSH is interpreted according to age, gender and cycle stage and usually together with LH, estradiol, AMH or testosterone. Your result is interpreted using the reference interval on the laboratory report and in the context of your symptoms, medical history and other test findings.
Sources and editorial status
This patient-facing text is an editorial draft. It should be approved by a laboratory physician before official publication.