The Hippa law that addresses this privileged communication is called the Privacy Law
The answer is not parasites, or pathogens. These are tested for before the donor and recipient are even matched
The antibody screen will test for antigens. So I believe the answer is Antibodies.
That's not true. Some people get anxiety or depression when stressed, some people get physically sick when stressed, some people get angry or emotional when stressed. Everyone reacts differently when it comes to stress.
The correct answer is number 1 After peeling potatoes and before slicing carrots