Yeah, the main thing that you should do is never lie to them. I had gyno and was too embarassed to tell my female doctor that I had taken AAS. She sent me to get a mamogram (talk about embarassing).....then I had to go and get the surgery....
The point is, a doctor, before they can become a doctor have to take the hypocrathic oath, which states (among other things) that they pledge to give a patient the best help to assist them in the recovery of their health.
A doctor doesn't have to agree with what you're doing, but they DO have to provide you assistance to get better. Blood tests are needed on the road to getting better....
I would just be honest and schedule some blood work. I get it done frequently now and not only do I not have to pay anything, but I also have built a trust with my doc and she helps me out along the way...
just my 2 cents