If you're having elective surgery, talk to your doctor about donating blood -- to yourself.
"Blood banks take great care in testing donors' blood, but if patients can give their own blood, it is definitely the best way to avoid diseases, such as hepatitis B and HIV," says Joseph C. McCarthy, M.D., an orthopaedic surgeon at New England Baptist Hospital in Boston.
Before you can donate, ask your doctor and/or hospital for guidelines. The rules for donating blood to yourself are not the same as donating to a blood bank. Generally, patients who want to use their own blood for surgery can't have an infectious disease and must meet the following requirements:
Obviously, the amount of blood you'll need will vary depending on the procedure. For example, the American Academy of Orthopaedic Surgeons says it takes about two units of blood replacement to perform primary hip surgery, but four or more units for revision hip surgery.