Stopping T-Boosters Before Blood Tests

Hey guys, i want to see what my test, estrogens etc… are at so im getting a blood test done soon.

I have been taking Formadrol which is a t-booster/anti estrogen supplement. I have seen ZERO results from it and will NOT be buying it again.

But what do you guys think is a resonable time to be “off” the supplement before getting the blood test?

Thanks for any advice