A complement C4 (also known as a complement component 4, or simply C4) is a test to measure the level of C4 proteins you have in your blood. These proteins play a role in how your immune system ...
The complement proteins that circulate in our blood are an important part of our immune system. They help identify bacteria, viruses and other harmful organisms, making it easier for our white blood ...
Omeros’ Narsoplimab Stabilized Kidney Function and Reduced Urinary Complement Proteins in a Patient with IgA Vasculitis -- First Report of Narsoplimab’s Effects on Complement Activation Markers in ...