
Only your vet can take the bloods, you don't need to get the kit as the vet should be able to do so or ahve wghat is needed.
The issue is turnaround time, so you need the bloods to be taken in teh morning and sent guaranteed 1 day delivery, and then ring Idexx or get Vet to ring, next afternoon for the results.
Avoid taking bloods on a Friday/Saturday as weknd post will interfere.