LH and FSH Testing Explained

What LH and FSH Do

Luteinizing hormone (LH) and follicle-stimulating hormone (FSH) are made by the pituitary gland. They act as messengers to the reproductive organs. In women, they help control the menstrual cycle and the release of an egg. In men, they drive sperm production and testosterone.

The two hormones work as a team. FSH helps follicles in the ovary mature and supports sperm production. LH triggers ovulation and signals the testes to make testosterone. Testing them together shows how well that partnership is working.

Both hormones are released in pulses rather than at a steady rate, so a single sample captures one moment in time. That is one reason results are read with the rest of your hormone picture instead of on their own.

What LH and FSH Tests Measure

An LH test and an FSH test each measure the amount of that hormone in a blood sample. Results are reported as numbers against reference ranges that depend on sex, age, and, for women, the point in the menstrual cycle. Some orders combine both hormones into one panel.

Labs may also measure related markers such as estradiol or testosterone at the same time. Because these hormones influence each other, the relationship between the values can be as telling as the values themselves. A clinician reads the group, not just one number.

Why LH and FSH Testing Is Ordered

A clinician may order LH and FSH to look into irregular periods, missed periods, or fertility concerns. The tests can help show whether the ovaries or testes are responding to pituitary signals. They are also used when puberty starts unusually early or late.

In men, LH and FSH can help evaluate low testosterone or sperm problems. In women, they are often part of a fertility workup or an assessment of perimenopause. Results are interpreted with symptoms and other hormones, not in isolation.

How Results Change Across the Cycle and Life Stages

FSH and LH are not static. In women, FSH rises early in the cycle to recruit follicles, while LH surges near ovulation. Levels shift with the phase of the cycle, pregnancy, and menopause. In men, both hormones stay fairly steady but can change with age or illness.

Because timing matters so much, a clinician may ask for the blood draw on a specific cycle day. Comparing a result to the wrong phase can make a normal value look unusual, which is why the draw date belongs on your report. If you order the test yourself, write down the date and cycle day for your records.

How to Order LH and FSH Tests / Where to Get Tested

You can order LH and FSH tests directly in most states. Select the tests online, pay at checkout, and visit a nearby patient service center for a blood draw. Results typically arrive in a confidential online account within one to three business days.

Our partner lab is CLIA-certified, and a self-pay order does not require insurance or a doctor's note. Ask a clinician about the best day to test if you are tracking a cycle. Self-pay testing provides information and does not replace medical care.

How Much Does LH and FSH Testing Cost?

Through our directory, a standalone FSH or LH test is about $49, and a combined FSH and LH panel is about $118. Broader hormone panels that include these markers with estradiol or testosterone run from roughly $199 to $299. Prices vary by location and by the tests included.

Compare the markers each order includes, since a combined test may cost less than ordering two single tests. The cash price shown at checkout is the total you pay. There are no insurance balances to settle later.

Reading LH and FSH Results

Read each result against the range printed on your report, and note the cycle day for women. A single value is a snapshot, and clinicians often track the pattern over time. Bring the report and your symptoms to a licensed clinician for interpretation.

If you repeat the tests, try to test at a similar point in the cycle so the results can be compared. This article is general information, not medical advice. It does not diagnose any condition or recommend treatment. A licensed clinician should interpret your results and guide any follow-up.