Lab test
FSH Blood Test
FSH Blood Test can be ordered without a referral from your own doctor, and this guide covers what to expect. An FSH blood test measures follicle-stimulating hormone, a key signal in reproductive health. It is often ordered alongside other hormone tests to give a fuller picture.
Lab requirements in FSH Blood Test
Here is what you need before ordering and completing the FSH Blood Test. Review each item and confirm the details with the collection lab.
- Physician's order
- Included. A physician's order is required for lab testing and is provided for you by our partner's physicians — no referral from your own doctor is needed.
- Fasting
- Some tests require fasting or avoiding certain foods or drinks beforehand. You will be informed when you order — confirm the details with the collection lab.
- Preparation
- Your collection lab will provide specific instructions, which may include timing the test to a certain point in your cycle. Follow those instructions closely, since preparation can differ…
- Sample & visit
- A blood and/or urine sample is collected; the visit usually takes about 10 minutes.
- Identification
- Bring the lab requisition form from your account. The collection lab may also ask for a government-issued photo ID.
- Turnaround
- 1-3 business days
- Availability
- Our partner lab does not serve ND, RI, NY, NJ, MD or HI. Confirm availability for your location with the collection lab.
Before you go
- Order your test before visiting a lab, then use the requisition form in your account.
- Print the requisition form, or fax it to the lab directly from your account.
- No scheduling is needed — visit the collection lab during its normal business hours.
- A blood and/or urine sample is collected; the visit usually takes about 10 minutes.
- Bring a government-issued photo ID in case the lab requests it.
- Results are posted to your secure account within 1–3 business days.
Requirements are summarized from our partner lab's published policies. Preparation and availability can change — confirm current instructions with the collection lab before your visit.
What this test is
Follicle-stimulating hormone is made by the pituitary gland and helps regulate the ovaries in women and sperm production in men. An FSH blood test checks the amount of this hormone circulating in the blood. It is frequently combined with a luteinizing hormone test because the two hormones work together.
What it measures
- Follicle-stimulating hormone (FSH) — reflects pituitary signaling related to reproductive function
- Luteinizing hormone (LH), when included — reflects another pituitary hormone that works with FSH
What the test involves
A healthcare professional collects a small blood sample, usually from a vein in the arm, using a standard blood draw. The sample is then sent to a laboratory for analysis.
Why it is often ordered
A clinician may order an FSH test when evaluating fertility concerns, irregular menstrual cycles, or symptoms that could relate to hormone balance. It can also be used to monitor how the pituitary gland and reproductive system are working together.
Preparation
Your collection lab will provide specific instructions, which may include timing the test to a certain point in your cycle. Follow those instructions closely, since preparation can differ from person to person.
How results are reported
Results are reported as a numeric level for FSH, often alongside a reference range from the testing laboratory. Reference ranges vary by laboratory and by factors such as age and sex, so your clinician interprets the number in context.
Before you go
- Whether any timing instructions apply to your test
- What preparation steps the collection lab recommends
- How and when your results will be shared with you
FAQ
Frequently asked questions
Does an FSH test diagnose a specific condition?
No single hormone test can diagnose a condition on its own. An FSH result is one piece of information that a clinician reviews alongside your history, symptoms, and other test results. Only a qualified clinician can interpret what the number means for you.
Do I need to fast before an FSH blood test?
Fasting is not typically required for an FSH test, but preparation instructions can vary. Check with the laboratory or your clinician about any specific steps to follow before your appointment.
Can the timing of my test affect the FSH result?
Yes, for some people the timing of the test in relation to the menstrual cycle can influence the result. Your clinician may recommend testing on a particular day, so ask for guidance before scheduling.
How long does it take to get FSH results?
Turnaround time is commonly a few business days, though it can vary by laboratory and how the sample is processed. Your ordering clinician or the collection site can give you a better idea of when to expect results.
Related
Related tests
Locations
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