Final answer:
When a phlebotomy technician sees a hematoma forming during a blood draw, they should release the tourniquet and stop the draw to minimize further bleeding. If a blood typing test shows agglutination in the presence of both anti-A and anti-B antibodies, it indicates a normal response for someone with AB blood type.
Step-by-step explanation:
If a phlebotomy technician observes a hematoma developing at the site of a venous blood draw, the correct action would be to C) Release the tourniquet and stop the draw. Promptly stopping the blood draw will minimize bleeding and reduce the risk of the hematoma expanding. After stopping the draw, the technician should apply pressure to the area, ideally with a clean gauze or bandage, to help control any bleeding and encourage clot formation. It's important to then assess the situation for severity and handle according to the facility's protocols, which may include informing a nurse or physician if needed.
In the case where a patient's blood type is being determined and agglutination occurs in both wells with anti-A and anti-B antibodies, this indicates that the patient has AB blood type. This is a normal response and not an error made by the technician. Type AB blood means that the person's red blood cells have both A and B antigens on their surface.