Fetal fibronectin testing is used after which gestational age range?

Fetal fibronectin testing is used after which gestational age range?

• A. 20 weeks to less than full term
• B. 0 to 20 weeks
• C. 37 weeks to term
• D. 40 weeks to term

Answer: (A)

Fetal fibronectin testing is used to assess the risk of preterm birth in pregnancies that have progressed beyond early gestation, typically after 20 weeks and most useful between about 22 and 34 weeks. It helps identify women at low risk for delivering imminently (negative result) versus those at higher risk who need closer monitoring or interventions. The test isn’t used in early pregnancy (before 20 weeks) and isn’t a management tool for term or near-term labor. So the appropriate range is after 20 weeks up to term, which is why that option is selected.

Fetal fibronectin testing is used to assess the risk of preterm birth in pregnancies that have progressed beyond early gestation, typically after 20 weeks and most useful between about 22 and 34 weeks. It helps identify women at low risk for delivering imminently (negative result) versus those at higher risk who need closer monitoring or interventions. The test isn’t used in early pregnancy (before 20 weeks) and isn’t a management tool for term or near-term labor. So the appropriate range is after 20 weeks up to term, which is why that option is selected.