Laboratory Test Information Guide

Details for Fetal Fibronectin

Test Name: Fetal Fibronectin
Alternate Name(s): fFN
Laboratory: Core
Specimen Type: Cervicovaginal swab using the Adeza Biomedical specimen collection kit
Collection Information: Swab must be sent to the Core Lab in the specimen transport tube supplied with the sample collection kit.

Unacceptable Samples include: If sample is received in a Non-Adeza collection tube, insufficient buffer volume, >3 days from collection and not frozen.
Test Schedule: As required
Turnaround time from when specimen
is received in testing laboratory:
4 hours
45 minutes
Reference Range: Negative or Positive
Effective Date: 2007-01-18
Revised Date: 2011-04-18
Critical Value:  
Interpretive Comments: Positive during second and third trimesters suggests twofold to fourfold higher risk for preterm delivery.

Positive interference from semen has not been ruled out. Specimens should not be collected less than 24 hours after intercourse. Negative fFN results would be valid.

Assay interference from the following components has not been ruled out: douches, white blood cells, red blood cells, bacteria, and bilirubin.

The presence of infections has not been reulted out as a confounding factor to risk of preterm delivery.

Specimens should obtained prior to digital examination or manipulation of the cervix. Manipulations of the cervix may lead to false positive results.
Special Processing:  
Comments: Patients with suspected or known placental abruption, placenta previa, or moderate or gross vaginal bleeding should not be tested.
Method of Analysis: Rapid fFN Cassette Kit
Critical Information Required:  
Storage & Shipment:  
System Codes: 
Referred To:  

Questions? Comments? Contact Laura Gopaul