C4 and C3 complement blood test

The C4 and C3 complement blood tests measure the levels of complement proteins C4 and C3 in the blood. Complement proteins are an essential part of the immune system and play a role in the body's defense against infections and the clearance of immune complexes. The C4 and C3 complement blood tests are commonly used to assess the activity and levels of these complement proteins in various autoimmune and inflammatory conditions.
This page is designed solely for educational purposes and does not constitute medical advice. If you have any concerns regarding your health, we strongly encourage you to consult with your healthcare provider. Please refrain from using this information for self-diagnosis, and always seek guidance from qualified healthcare professionals. In case of a medical emergency, please call 911 or visit the nearest hospital or urgent care facility.

Schedule a lab test to your home or office.

We bring the lab to you! 
patient and clinical staff