What an interesting question!
Since most birth control pills are made up of a combo of estrogen and progesterone (except the mini pill which is only progesterone) there would be a level of progesterone in a blood serum test. (If you were indeed tested while on the pill) But it wouldn't make sense to test you, because in essence you are just injecting progesterone into your body- so you already know the answer. :p
To get a realistic progesterone level, you would have to stop taking the pill. That way any progesterone level you received on a blood test would be accurate- because progesterone is only made by the body, once ovulation has occurred. There would be no way of telling while on the pill.
HTH?
Bug |