HIV testing is required before minor surgical procedures. Minor surgical procedures include surgical removal of body masses, lipomas, fibroadenomas, and sebaceous cysts. Blood is routinely checked before minor surgical procedures to remove them, checking blood counts, clotting function, and pre-transfusion routines. Blood routine can look at the white blood cell, red blood cell, platelet count in the patient’s body, and it can look at the value of hemoglobin, whether there is anemia, whether there is any infection and other conditions. Coagulation function mainly reflects the length of clotting time after bleeding, if the coagulation function is poor, that is to say, after bleeding the blood self-coagulation time is very long, which may lead to surgical wounds oozing blood as well as bleeding from the incision after surgery. The pre-transfusion routine includes Hepatitis C, HIV and Syphilis, which are routinely checked before surgery.