fFN (Fetal Fibronectin) Test

Should You Get A Fetal Fibronectin Test?

Getting a fFN test is a way for you to be actively involved in your pregnancy and your baby's health. Women with risk factors or symptoms of preterm labor should get tested to help provide their doctors with important information. There are also other possible reasons why you and your doctor may decide that the test is right for you, so it is important to discuss your situation with your doctor or nurse-midwife.

Know what to expect

Most women who get tested, will have a negative test result, which can give them great "peace of mind" — a negative test result means you can be 99.2% assured that you won't go into labor in the next two weeks.1 On the other hand, if you get a positive test result, that does not always mean your baby will be born preterm.

Your doctor or nurse-midwife can help

If you think you could be at risk of having an early birth, ask your doctor or nurse-midwife about fFN. The more you know now, the better you will be able to care for your baby throughout your pregnancy.


  • 1. Peaceman AM, Andrews WW, Thorp JM, et al. Fetal fibronectin as a predictor of preterm birth in patients with symptoms: A multicenter trial. Am J Obstet Gynecol. 1997;177:13-18.
Frequently Asked Questions About Fetal Fibronectin


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