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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