Oct 24, 2024 · C4 Complement Blood Test A C4 complement blood test gives your healthcare provider information about your immune system. It measures how much C4 protein you have …

Feb 25, 2024 · 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 …

The normal range for a complement C4 blood test is 16 to 48 milligrams per deciliter (mg/dL), or 0.16 to 0.48 grams per liter (g/L). Your complement levels will often shoot up dramatically just …

There are nine major complement proteins. They are labeled C1 through C9. Complement proteins may be measured individually or together: C3 and C4 proteins are the most …

Complement component 4 (C4), in humans, is a protein involved in the intricate complement system, originating from the human leukocyte antigen (HLA) system, which when paired with …

What is this test? This test measures the amount of C4 proteins in your blood. These proteins are part of your complement system, an important part of your immune system that helps kill …

Aug 15, 2025 · Complement component 4, or C4, is a protein that plays a role in the body’s immune system. When a C4 complement test shows an elevated level, it indicates an active …

Assessing disease activity in systemic lupus erythematosus, proliferative glomerulonephritis, rheumatoid arthritis, and autoimmune hemolytic anemia. Nephelometry.

Feb 4, 2025 · Doctors use the C4 complement blood test to measure C4 protein levels in the blood. Since C4 plays a key role in immunity, its assessment remains essential. This test …

This test measures the amount of C4 proteins in your blood. These proteins are part of your complement system, an important part of your immune system that helps kill disease-causing …