Test Code FFN Fetal Fibronectin
Additional Codes
LAB287
Collection Method
1. During a speculum examination, prior to any examination or manipulation of the cervix or the vaginal tract, lightly rotate the sterile swab across the posterior fornix of the vagina for approximately 10 seconds to absorb cervicovaginal secretions. Subsequent attempts to saturate the swab may invalidate the test.
2. Remove swab and immerse tip in buffer. Break the shaft (at the score) even with the top of the tube.
3. Align the shaft with the hole inside the tube cap and push down tightly over the shaft, sealing the tube. Warning: The shaft must be aligned to avoid leakage.
4. Write the patient’s name and other identifying information required on the specimen transport tube label.
5. Send the tube for testing. Transport specimens at 2° to 25°C, or frozen.
Container
Rapid fFN Test Specimen Collection Kit Swab
Acceptable Specimens
Cervicovaginal secretions
Reference or Target Ranges
Negative
Reportable Units
Positive or Negative
Critical Value
Not defined for this asay
Reasons for Rejection
Hemolysis Threshold | N/A |
Icterus Threshold | N/A |
Lipemia Threshold | N/A |
Other | Contaminated, improperly Labeled, improper specimen type |
Specimen Stability
Ambient | 8 hours |
Refrigerated (4°C to 8°C) | 3 days |
Frozen(-40°C to 0°C) | 3 months |
Performance Information
Days and Time Performed | 24/7 |
Expected Turn Around Time | Stat: 1 hour Routine: 4 hours |
Stat Availability | Yes |
Performing Bench | CPH Serology |
Methodology/Method Description | Hologic Rapid fFN |
CPT Codes
82731
Last review/edit date
March 2024