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
It's offered before or early in pregnancy. Carriers are usually healthy.
Why it's done
- Planning a pregnancy or early pregnancy
- Family history of a genetic condition
Getting ready and what happens
- No preparation is needed.
How the test is done
- A blood draw or saliva sample.
What the results mean
You're a carrier
Your partner may be tested. If both of you carry the same condition, each pregnancy has a 1 in 4 chance of being affected; a genetic counselor can explain options.
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.