A member asked:

Consistently low to low norm c3 and c4. (sle). hosp with severe infection. c3 and c4 increase a lot. why? please explain.

A doctor has provided 1 answer
Dr. Aaron Broadwell answered

Specializes in Internal Medicine

Complements: Complements are parts of the immune system. Lupus activity decreases complements. Infection causes a rise in complements in general. They are termed 'acute phase reactants'.

Answered 1/5/2019

3.9k views

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