R89: Abnormal findings in specimens from other organs, systems and tissues
R89.4: Abnormal findings in specimens from other organs, systems and tissues : abnormal immunological findings
The immune system protects the body from pathogens and foreign substances. The immune system can also destroy cells in the body that have pathologically changed. The body’s immune system is made up of different types of immune cells. Some immune cells can destroy pathogens or foreign bodies themselves. Other immune cells produce certain antibodies.
Changes in the sample can be an indication of a disease. The results can also depend on factors like when the sample is taken or how the sample is stored until it is examined.
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