No you cant use finger prick tests for this, it’ll need to be a nurse drawing blood or pop along to a clinic. The others have given you good advice, it is too early to test and will just confuse you IMO. I’m with Newson too, you’re best to follow their advice on when to do the first blood test. They told me 3 months after being on estrogen and testosterone together I should test but purely for the testosterone as they don’t use bloods that much for estrogen. After that it’s yearly for testosterone. Newson have their own lab they work with, I can’t remember the name. A lot of women here also have thyroid problems, as I do, and I use Medichecks for that, who I quite like, and I have previously used them for other testing like vit D etc and they’re always good. The only problem I’ve had is the nurse they sent was terrible at drawing blood!!