Reliable Results in Symptomatic Patients

When a patient is experiencing symptoms of preterm labor, you want to be as confident as possible in your decision to admit her, observe her, or discharge her.

>99% Approximately 99.2% of women with symptoms of preterm labor who have a negative test result will not deliver within the next 2 weeks. Less than 1% of women will deliver before 28 weeks if they have a negative fetal fibronectin test result at 22–24 weeks.

>40% Over 40% of women with symptoms of preterm labor who have a positive test result will deliver prematurely (before 37 weeks of gestation). At 22–24 weeks, a positive test result is associated with a 60-fold greater risk of premature delivery than a negative test. 


  1. Fetal Fibronectin [package insert]. AW-04196-003. Marlborough, MA; Hologic, Inc., 2015.


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