Running the Rapid fFN® test
for the TLiIQ® system

The Rapid fFN test for the TLiIQ system offers fast, easy, and convenient processing of samples for the detection of fetal fibronectin in vaginal secretions. The resources below will help you run, install, and calibrate the analyzer for optimal performance and reliable results.

How to run the Rapid fFN test

The Rapid fFN for the TLiIQ System is an FDA-approved device for in-vitro diagnostic testing.1
The system offers multiple advantages that make it easy to incorporate testing into your clinical protocol.


  • Single-use dry chemistry cassette
  • Calibration code for each cassette lot eliminates daily liquid calibration
  • Automatic internal quality control of analyzer and cassette with each patient test
  • Easy-to-read quality control and test results

Convenient quality control

  • The QCette® QC device verifies analyzer performance is within specification
  • Does not expire and is reusable
  • Is pre-calibrated for quick and easy use
  • Returns results in 3 minutes

Walk-away instrumentation

Total operator time is less than 60 seconds per test.2

Step 1

Run the TLiIQ QCette once a day.

Step 2

Enter the patient information.

Step 3

Dispense specimen into the cassette well.

Step 4

Press ENTER and walk away.

Step 5

Results ready in less than 30 minutes.

Calibration code lookup for Rapid fFN cassettes

If you’ve accidentally thrown away the box and need the calibration code (cal code) for Rapid fFN cassettes,
you can look it up here by entering the Lot Number from the Rapid fFN cassette in question. The Lot Number is a
5-digit code that can be found near the expiration date on the right side of the Rapid fFN cassette wrapper.

How to install and verify the Rapid fFN TLiIQ System

To set up and install your TLiIQ System, complete Daily QC, run positive/negative controls and for patient testing instructions, watch the TLiIQ Installation Video above or use the link below to download installation instructions.

To verify your TLiIQ System using the Clinical Correlation Kit, watch the CCK Verification Video above or use the link below to download verification instructions.

fFN billing information

The following codes are used for fFN testing.

CPT code for fetal fibronectin:

  • 82731

ICD-10 codes for labor and delivery:

  • 644: Early or threatened labor
  • 644.0: Threatened labor
  • 644.1: Early onset of delivery

Hologic, Inc. provides these coding guidelines for informational purposes only. These guidelines are not an affirmative instruction as to which CPT/HCPCS codes to use for a particular study or test. It is the provider’s/laboratory’s responsibility to determine and submit the appropriate codes for any study or test rendered. Actual codes and/or modifiers used are at the sole discretion of the provider/laboratory. Contact your local carrier and payer organizations for specific coding guidelines. Hologic, Inc. cannot guarantee medical benefit coverage or reimbursement with the codes listed in this guide. Reimbursement may differ based on geographic regional variance and/or policies and fee schedules outlined as terms in your health plan, payer, and/or carrier contracts.

Get started

Contact us for more information about the Rapid fFN test.