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A member asked:
What does it mean if my complement c3 serum was 4 points low on a scale of 90-180 and my c4 was normal? could there be something wrong?
2 doctors weighed in across 2 answers
Not really: If all other tests are negative and there is no evidence of autoimmune antibodies, one number does not carry enough meaning to be worrisome.
Answered 1/20/2013
5.4k views
Probably nothing: Decreased complement levels are seen in patients with active lupus. However, very minor abnormalities occur frequently, even in perfectly healthy individuals. These lab values must be viewed in the context of other lab studies and the clinical picture. Ask the physician who ordered the complement studies for his/her opinion as to the clinical relevance of this isolated lab abnormality.
Answered 1/21/2013
5.4k views
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My C4 complement level is low and C3 complement is at the low end of the range (90, ref range 90-180). What could this mean?
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What means very high CH50 complement? Mine is 277 CAE,C3 and C4 normal.Ref ranges for lab are only greater than 60,but I read high could be pathologis
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Complement C3 & C4 tests done 3 times. C3 normal but twice C4 was borderline normal or borderline low, 3rd time it was well within range. deficiency?
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