I got same day results. So I knew exactly what was going on. I would check with the vet's office to see if they get same day results and test accordingly.
I agree, I would test Thurs. for Friday. You get a shipment Sat. That might be the best you can do. Whatever that number is, you might ask for a shipment Tues. for Wed. bet she will be ready about Mon/Tues. of next week.
Make sure the tech knows to use a red top non separator tube. This is important with progesterone and I have had to point it out to techs who had no idea.