I’ve done hundreds of pregnancy tests for dogs, I needed a test quick so I came to a Amazon (2 day shipping) I read the reviews and was skeptical but said oh well I need it and I know how to do them so these tests should work fine. WRONG. The control lines never showed up on any of the tests, pictured I have the whole blood with their serum (per their instructions) and the other test next to it I used plasma from a separate blood draw as the other review stated “worked” for him. Nope, neither way worked. After 15 minutes this is what the tests look like, no control line, no test line.Do not order these it’s a waste of time and $39.I will continue to order from my original supplier MyBreederSupply and just wait 5 days for shipping.There’s also no refunds on the product, which is not very professional when the tests were clearly invalid and faulty on their end.