Which of the following statements is true regarding fetal fibronectin?

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To measure fetal fibronectin, clinicians swab the posterior fornix of the vagina, and store the swab in buffer until analysis.The presence of fetal fibronectin (i.e., a positive test result) in symptomatic women during weeks 24 through 34 of gestation indicates an increased risk of preterm delivery.The absence of fetal fibronectin (i.e., a negative test result) is a much more reliable predictor because it indicates that the pregnancy is likely to continue for at least another 2 weeks.

Which of the Following Statements Is True Regarding Fetal Fibronectin