Give Blood, Even With Diabetes ( Diabetes )
Having diabetes does not automatically exclude you from donating blood. The American Red Cross states that people with diabetes may donate blood if they meet the following guidelines:
They have not had an initial dosage of insulin or change of insulin dose in at least two weeks.
They have not received an injection of bovine (beef) insulin made from cattle from the United Kingdom since 1980.
If you take oral medications for type 2 diabetes, you’re not disqualified from donating blood. It is suggested, however, that you wait eight weeks (or 56 days) between whole blood donations. Other blood donation eligibility guidelines may apply, depending on your medical history.