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A member asked:
Repeated blood tests show i have very low complement c3 @ 41 and not sure is c4 @ 12 is also considered low. what tests should be done next?
2 doctors weighed in across 2 answers
An ANA profile with : An ANA reflex profile. Keep in mind that partial complement deficiencies are not uncommon. But you need to rule out a complement consuming disease, such as lupus.
Answered 11/28/2018
687 views
Any symptoms?: Why were these tests done? All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Having said that, it needs to be kept in mind that complement proteins are labile and if the blood specimen is not handled properly, it may give inaccurate results. Would be prudent to get retested at a reputable lab.
Answered 5/23/2017
687 views
Related Questions
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I have normal levels of complement C2 and c4. C3 level is low. Ch50 is high-normal(57 u/ml)-(all are serum tests)-what are the possible causes?
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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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A member asked:
The result of my blood test for C3 complement is high and CPK result is too low, does this mean I have symptoms of lupus?
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Does c3 & c4 have to be low to indicate lupus. My c3 was the only one low. I also had positive ana & I had more blood work done, but not back yet.
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