A CH50 blood test, also known as a total hemolytic complement (CH50) test, is a type of test that measures the levels of CH50, which is a protein that is part of the complement system in the blood. This test is commonly ordered to help diagnose and monitor autoimmune disorders, such as lupus and rheumatoid arthritis, and to evaluate the effectiveness of treatment for these conditions. It can also be used to help diagnose certain infections and other conditions that affect the immune system.
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