Get Virtual Care
For Businesses
About Us
A member asked:
My baby has a low c4 count - explain please!?
A doctor has provided 1 answer
What's the age?: If you have a premature infant, chances are that the level represents chronic lung disease/hx or respiratory distress. Autoimmune diseases also can be associated with C4 decreases, however, other studies are indicated. C3 and C4 are the most commonly measured complement components. Complement activity may be measured to determine how severe a disease is or if treatment is working.
Answered 2/13/2015
5.7k views
Related Questions
A member asked:
I have a lupus overlap. My C3/C4 have always been low, but this month C4 is at its lowest while C3 is a low normal. Why would it increase? ESR is up.
2 doctors weighed in across 2 answers
A member asked:
Is a high ch50 with high hematocrit of any significance? When typically my C3 C4 and ch50 are low?
A doctor has provided 1 answer
A member asked:
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?
4 doctors weighed in across 2 answers
A member asked:
Re:lupus, recently my C3 is low and C4 is low but where i had 0 for anti_dsdna my last lab showed 10 is my lupus active again?
A doctor has provided 1 answer
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
People also searched for:
Are c3 and c4 just a snapshot or does a decline over time indicate an issue? C3 is low end normal and C4 is normal.
What is the difference between a low C3 and C4 vs low c3c c4c?
I have low C3 and C4 with high histamine levels. What could be the cause?
What does a test result for C3 low and C4 normal? C3 value is 11.69
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?
Didn't find what you're looking for?
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your questionMore of what we treat
Download HealthTap
Video visit and message your doctor
