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A member asked:
Complement c4 is .12 (normal is .14 -.54) is it worth getting repeated.
4 doctors weighed in across 2 answers
Yes, piece of mind: Complement deficiency is rare but requires a fairly extensive work-up by an immunologist. A simple repeat of this test could offer some direction particularly if asymtomatic.
Answered 4/14/2014
5.4k views
Depends: Complement C4 being low could indicate an issue with activation of the complement system such as after infection. It could also be related to liver disease, genetic deficiency of complement, vasculitis, lupus, or even could possibly just be a low-normal value for you. So i would repeat testing only if you have other medical concerns that are currently being evaluated.
Answered 3/1/2016
5.4k views
Related Questions
A member asked:
Do serum complement levels naturally fluctuate? had one mildly low C4 with normal C3 but when test redone both had risen & C4 was within normal range
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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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A member asked:
Can you have a normal ch50 (total complement) blood test result, but still have low C3 and/or C4 levels?...Or would low C3 or C4 show up on ch50 test?
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A member asked:
Could my severe vitamin d deficiency be the cause of my extremely high complement ch50 level? C3 and C4 are normal.
A doctor has provided 1 answer
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