Diagnostic test for Feline Relaxin – Pregnancy (FRL)

Relaxin is a specific hormone generated mainly by the placenta (syncytiotrophoblast). It is usually used as an indicator of pregnancy status in female cats. In pregnant cats, relaxin can be detected on the Day 25 of gestation. The Feline Relaxin Pregnancy Rapid Test detects relaxin in queens that may be pregnant. The suggested detection period is 25-32 days after mating. Too early detection may lead to a negative result when relaxin in serum or plasma is too low. It is suggested to repeat the test after 1 week if a negative result was observed.

With REDTEST Rapid Feline Pregnancy Relaxin Test you can check if your female cat is pregnant.

REDTEST test device

Diagnostic test for Feline Relaxin - Pregnancy (FRL)

Sample material:
Diagnostic test contains the following components:
  • REDTEST test device
  • Disposable droppper
  • Instruction of use

How to perform FRL test?

Unpack the test

Remove the test device from the sealed pouch and place it on the flat surface

Collect the sample

Collect the sample and add 3-4 drops to the sample well.


Interpret the test results after 5-10 minutes.
Results read earlier or later may be falsified.

Interpretation of the results

Positive result: two colored lines will appear - in the test line zone and control line zone
Negative result: only one colored line will appear in the control line zone
Invalid result: the colored line does not appear in the control line zone

Where to buy FRL immunochromatographic test?