
These premate kits are for testing blood samples. So unless yiu are competent to take blood on a daily basis until the test goes positive you need your vet to do it. Also the kits come in batches of 10 tests, which is why they ae expensive to ahve done at the vet, as after they are opened there is a limited shelf life, so you end up paying for the 10 even if you only need one or three.
You would start testing on about day 8 on alternate days until it showed ovulation imminent, then retest daily until it shows the bitch has actually ovulated.
With my girls I had to test 3 days running.