When should the tourniquet be removed during a blood draw?

The tourniquet should be removed before the needle is removed from the vein to minimize the risk of hematoma formation and to help ensure that the patient is not experiencing unnecessary discomfort. When the tourniquet is left on for too long, it can cause engorgement of the veins with blood, which may lead to complications such as the bursting of a small vein or bruising. Once blood flow has started and a successful draw is achieved, releasing the tourniquet prior to withdrawing the needle will promote a smoother transition and help prevent complications related to venous pressure. This practice enhances both the safety and comfort of the patient during the procedure.