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Our Health Library information does not replace the advice of a doctor. Please be advised that this information is made available to assist our patients to learn about general health issues that may not be related to Ear, Nose and Throat Disorders. Our providers may not see and/or treat all topics found herein

Complement Test

Overview

A complement test uses a blood sample to detect a group of proteins that help the body attack foreign substances.

When there are a lot of foreign substances in the body, such as bacteria or viruses, a low level of complement means the body is trying to get rid of the foreign substances. If the body is attacking its own tissues instead of foreign substances (as in autoimmune diseases such as lupus), a low level of complement may mean that the body is attacking and damaging tissues such as the kidneys.

Related Information

Credits

Current as of: May 13, 2023

Author: Healthwise Staff
Clinical Review Board
All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.