Now that Mark mentions the blood test, my progesterone levels may have been measured from that. I've had so many blood tests by now, I forget what test is what. I only had the saliva test once and know that cortisol and a few other things are best measured that way, like PCSLearner says, over the course of a day. It may not be completely accurate like blood tests, but it is useful to get a snapshot of certain things.

I really appreciate Mark's advice to get all these things checked, it has helped speed up my support in healing this dreaded PCS!