Final answer:
Eligibility for blood donation is based on criteria such as having a blood pressure below 180/100 and ABO compatibility between donor and recipient, and is not affected by high cholesterol, medication, or flu shots.
Step-by-step explanation:
The criteria for blood donation regarding temperature are not only concerned with the donor's health but also with the safety and effectiveness of the transfusion. The normal temperature of blood is typically higher than the rest of the body, about 38°C or 100.4°F, which is higher than the standard internal body temperature of 37°C or 98.6°F; this is due to the heat produced from friction as blood flows through blood vessels. As long as a donor's blood pressure is below 180/100, they can donate blood, regardless of high cholesterol levels or medication intake, including those for cholesterol and blood pressure. Myths such as being disqualified from donation due to receiving a flu shot or being of a certain age are debunked, emphasizing that eligibilities are more inclusive than some might think. Other important aspects of blood transfusion include ensuring ABO compatibility and having a proper match between donor and recipient to prevent immune system rejection. In emergency situations, where typing and cross-matching cannot occur, Type O blood may be used. Thus, understanding these criteria and realities helps to maintain a safe and efficient blood donation and transfusion system.