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Choose collection locationHormones & Fertility · Individual laboratory test
FSH is a pituitary signal involved in ovarian follicle development and sperm production. Interpretation depends on age and the clinical reason for the test.
Clinical authorDr Nirupama SabhapathySpecialist Clinical Pathology
Understanding the test
Also called Fertility Hormone (FSH)
FSH may be requested during investigations of menstrual changes, ovarian function, sperm production or puberty. Each question has a different interpretation.
FSH is a pituitary hormone involved in ovarian follicle development and sperm production.
A clinician can compare FSH with other reproductive hormones and the sampling date.
Before your sample
Fasting is generally unnecessary. If the order relates to a menstrual cycle, ask which day to attend and record the first day of your most recent period.
A clinician takes a small sample of blood from a vein. The laboratory uses serum, the liquid separated from the blood after it clots.
Smart Report
24 hoursLaboratory turnaround
FSH reflects a signal from the pituitary to the ovaries or testes. Comparing it with other hormone measurements helps place a change in the correct part of that system.
From sample to follow-up

Choose your location, add the test to your care bag and select a time. If you are booking for someone else, assign the test to them in checkout.
Choose collection locationLook for Follicle Stimulating Hormone (FSH) in your report. Use the sample type and collection time when comparing it with an earlier report.
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Bring the cycle date, estradiol result and any reproductive hormone treatment so the clinician can interpret FSH in context.
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Patient questions
It cannot answer that question alone. Cycle timing, estradiol and the rest of the fertility assessment affect the interpretation.
A low FSH with low sex hormones points upstream to the pituitary or hypothalamus rather than the ovaries or testes. Causes include very low body weight, disordered eating, intensive training, severe stress, raised prolactin, a pituitary tumour, surgery or radiotherapy, and hormones taken from outside the body such as testosterone, anabolic steroids or combined contraception.
FSH is the pituitary's signal to the ovaries, so it gives only an indirect impression of reserve and varies across the cycle and between months. AMH is made by the developing follicles themselves, so it reflects the remaining follicle pool more directly. Neither counts eggs or measures their quality, and doctors often use the two together with an ultrasound follicle count.
If you have regular periods and the request is for baseline ovarian reserve, FSH and estradiol are usually drawn together on cycle days 2 to 4. If your periods have stopped or the referral is for another reason, confirm the timing with the clinician who ordered it.
KEEP EXPLORING
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Total testosterone, LH and FSH from one blood sample, to assess testosterone levels and the signals that drive them.

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A reproductive hormone panel to evaluate the key drivers of male fertility and hormonal balance.
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Written by Dr Nirupama Sabhapathy, Specialist Clinical Pathology. Medically reviewed by Dr Joyce Jose, Specialist Clinical Pathology, on .
Catalogue information and AED price checked on 2 November 2026. Clinical suitability, preparation, collection arrangements and turnaround are confirmed for your selected test.