Fetal Fibronectin
Use
Aid in assessing the risk of pre-term delivery in symptomatic (signs and symptoms of early pre-term labor) and in asymptomatic women between 22 weeks and 30 weeks 6 days of gestation.
Special Instructions
Due to the value of this test in managing late-term pregnancies, it is crucial that the specimen be sent to a laboratory capable of providing testing on a 24/7 basis. Ideally, the specimen should reach the testing laboratory within four hours of collection. It is important to contact the laboratory before collection as this test may not be available at all locations.
Limitations
This test should not be used in symptomatic women presenting with advanced cervical dilation (> 3 cm), rupture of amniotic membranes, cervical cerclage, or moderate to severe vaginal bleeding. Asymptomatic women with multiple gestations, cervical cerclage, placenta previa, or those who have engaged in sexual intercourse in the preceding 24 hours should not use this test. These limitations may affect the accuracy and reliability of the test results.
Methodology
Immunoassay
Biomarkers
LOINC Codes
- 20404-0
- 20404-0
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Cervical Swab
Volume
1 FFN tube with buffer (swab)
Minimum Volume
Not provided
Container
ADEZA collection kit
Collection Instructions
Freeze after collection. Ship frozen.
Storage Instructions
Freeze.
Causes for Rejection
Sample held at room temperature for >8 hours.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | Less than 8 hours (stability provided by manufacturer or literature reference) |
| Refrigerated | 3 days (stability provided by manufacturer or literature reference) |
| Frozen | 6 weeks (stability provided by manufacturer or literature reference) |