When Labeling Red Blood Cells Using the in Vitro Method

question 10

Multiple Choice

When labeling red blood cells using the in vitro method, acid-citrate-dextrose (ACD) is added to the aliquot of patient's blood to

• A)"thin" the blood.
• B)reduce any extracellular stannous chloride.
• C)prevent clotting.
• D)stop the tagging.

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Definitions:

Antibodies

Proteins produced by the immune system that recognize and bind to specific foreign substances called antigens to neutralize or destroy them.

Histamine

A compound found in body cells that plays a major role in allergic reactions, acting as a neurotransmitter and involved in the regulation of stomach acid.

Allergic Responses

Immune system reactions to certain substances, called allergens, that are normally harmless to most people.

Injured Tissues

This term refers to tissues in the body that have been damaged due to trauma, disease, or other factors, affecting their normal function.