The Diabetes Council has provided a detailed study to spread awareness on this subject.
Click the below link to see the details.
https://www.thediabetescouncil.com/can-i-still-donate-blood-if-i-have-diabetes/
To donate blood with diabetes, your blood sugar needs to be in your target range. Your A1C should be less than 7%, as recommended by the American Diabetes Association. If your blood sugars and diabetes are not well controlled, you shouldn’t donate blood. Besides having your blood sugars in control, you should also have other conditions under control. For example, your blood pressure should be less than 180/100 mmHg to give blood, which is higher than 140/90 mmHg that is the recommended blood pressure for people with diabetes. Conversely, if your blood pressure is less than 90/50 mmHg, you won’t be able to donate blood.
Besides diabetes, they will also ask you about other conditions, and medications which you may be taking. Diabetes medications generally won’t keep you from giving blood in the US, but there is a Red Cross list of other medications that shouldn’t be taken if you are donating blood, including blood thinners. The Red Cross representative will screen you for conditions and medications which may affect your ability to donate blood with diabetes and related health conditions. Another thing to know is that if you plan to donate platelets, you should not take aspirin or blood thinners for several days prior to your donation.

Heart disease and donating blood
If you have heart complications from your diabetes, there are some things that you need to know. Heart disease will generally not stop you from donating blood if you have diabetes, but if it has been less than six months since you have had symptoms related to your heart disease, then you may not be able to donate. If your heart disease is stable and being treated, and you have had no issues in the last six months, such as chest pains or shortness of breath, you should then be okay to donate blood. You should also have no restrictions of activities due to your heart if you plan to donate blood.
To organize a blood drive in your region write to sikhaid@unitedsikhs.org. For more information on Blood Drives or other UNITED SIKHS Community Service initiatives, visit us at www.unitedsikhs.org/ceed
Community Health Coordinator
Aditi Kaur
E: aditi.kaur@unitedsikhs.org