
I used Idexx once and altho the bitch was in whelp, I am sure she had started to go over and she only had three pups.....
I dont know where you are in the UK but I now use a woman local to me who does a cytology test and also checks bacteria levels from the vagina and three times two seperate bitches went on to have healthy litters of 7.........Both of these bitches can have silent seasons and I found her way much more reliable, you can go back 3 times to check the stages the cells are at...
Idexx may work for some but samples can get delayed in the post, I would check and see if anyone in your area does the cytology service, I think it is more reliable.....