My son was diagnoses with a blood disorder and nee...

My son was diagnoses with a blood disorder and needed weekly therapeutic phlebotomies. My doctor's office was not capable to take the amount of blood that needed to be taken on a weekly basis to get his levels down, so we were sent to the hospital lab for them instead. I would like to know why we were not told that the phlebotomy (same as what the red cross does) would cost us $100 per time after insurance BEFORE it was done. We were under the impression that is was just part of our doctor co-pay. They checked my son in each week, but never mentioned anything until the third time when they demanded payment for that day. Shouldn't this have been a discussion before the bill was ran up. He is finally able to see a Hematologist (specialist) where there is a in-house lab and they do his blood under the $30/co-pay.