Need help with when should I go for progesterone test as peak landed on a Saturday.

LK 👼🌈💙

I got a positive on Friday and peak on Saturday, I need to book in for progesterone bloodwork 7days before my period which lands on a Sunday. Can I go for the blood work on the Friday 2nd or do I have to wait till Monday the 5th see calendar for reference. I got a peak on Saturday 26th November.