Fetal Fibronectin Specimen Collection
The fetal fibronectin specimen must be collected during a speculum examination before any other vaginal exam is performed. Lubricating gels will interfere with the test results.
Fetal fibronectin speciman collection kits are the only acceptable kits for specimen collection.
Order free fetal fibronectin specimen collection kits
Specimen Collection Procedure

For Accurate Patient Results
For accurate patient results, please ensure that you follow these specimen collection instructions.
- The specimen should be collected prior to a digital cervical exam, collection of culture specimens, or vaginal probe ultrasound exams.
- Do not contaminate the swab or specimen with lubricants, soaps, disinfectants, or creams.
- Do not collect specimen if patients have had sexual intercourse within 24 hours prior to sampling; moderate or gross vaginal bleeding; advanced cervical dilation (3 cm or greater); rupture of membranes; gestational age <22 weeks or >35 weeks; or suspected or known placental abruption or placenta previa.
For a complete description of the Specimen Collection Procedure and related Precautions and Warnings and Contraindications relating to patient eligibility, please refer to the Fetal Fibronectin Test Collection Kit Insert and the Rapid fFN Cassette Directional Insert.