Highly recommended and easy to use. This helps me manage my breeding plans and care for my animals better. I am using this for my Siberian Cattery and some of the cats have false pregnancies or fail to carry to term. This gives my vet and I more knowledge about which males and females are compatible. The test is easy to use as long as you have a centrifuge and a timer. In Europe this type of test is common for cat breeding. In the US is designed for canines. I find it very accurate for cats after 28 days gestation.
This is accurate after just a few weeks and I love that these tests don't need to be refrigerated. That makes managing things a lot easier.