Good to knowOne result rarely tells the whole story. Your provider looks at your results together with your symptoms, exam, and other tests.
What the test is
In women, levels change through the cycle, so timing matters (often day 3).
Why it's done
- Trouble getting pregnant
- Irregular or missed periods
- Possible menopause or early menopause
- Low testosterone
- Early or late puberty
Getting ready and what happens
- Your provider will tell you which cycle day to test.
How the test is done
- A health worker cleans the skin, puts a band around your arm, and draws blood from a vein with a small needle. It takes a few minutes.
What the results mean
High FSH
In women, points to fewer eggs or menopause. In men, can point to testicular problems.
Low FSH and LH
Can point to a pituitary or hypothalamus problem.
High LH-to-FSH ratio
Sometimes seen in PCOS.
Questions to ask your provider
- What do my results mean for me?
- Do I need to repeat this test or have other tests?
Risks
A blood draw is very safe. You may have slight pain or a small bruise where the needle went in.
Related conditions
Related tests
Sources
Last updated 2026-11-13.