Got a blood test today

They gave me the choice of blood or urine test & i told them blood since I’ve already gotta positive urine tests. They took 3 vials of blood though. Does that mean they’re checking my progesterone & stuff too? I know a lot of people have low progesterone so I’m glad they did if that’s what it is. If not what else could they be checking? I only went in to confirm pregnancy so i don’t think theyd be checking anything unrelated to that. I’ll get the results tomorrow. Meant to add too, this was just my primary care drs office. I wanted to confirm before scheduling with OB