while on the unit we had a discussion concerning heparin drips and drawing a ptt. I would like to hear what others do or what their hospital policy is. We tried to look up a policy and couldnt find one. Pt is receiving heparin drip via peripheral site. Can't stick the other arm due to a fistula, have to get the ptt out of the arm with the heparin drip. the general consenus was if draw above the IV turn off heparin for a few min before v/p if drawing below the IV is where people were not in agreement turn off the IV or no?