How long do you have to wait after an appendectomy before can donate blood?

It depends on the specific policies and guidelines of the blood donation organization in your country or region. In general, there is a waiting period after certain medical procedures, including appendectomy, to ensure the safety and well-being of both the donor and the recipients of the donated blood.

Here are some examples of waiting periods after an appendectomy, according to different blood donation organizations:

- American Red Cross (USA): The waiting period after an appendectomy is usually 6 months.

- Canadian Blood Services (Canada): The waiting period after an appendectomy is at least 2 months, but may be longer depending on the individual's recovery.

- NHS Blood and Transplant (United Kingdom): The waiting period after an appendectomy is 12 months.

- Australian Red Cross Blood Service (Australia): The waiting period after an appendectomy is 12 months.

It's essential to check with the local blood donation organization or center to confirm the specific waiting period in your area and to ensure you meet all other eligibility criteria for blood donation.