C4 Level
Alternate Names : C4
Definition C4 level is a test that measures the concentration of a component of the complement system in the blood.
Why is the Test Performed?
Complement activity (CH50, CH100, terminal complement component, or individual complement proteins) is measured to determine if complement is involved in the development of a disease. Complement activity is also measured to monitor how severe a disease is, or if treatment is working.
For example, patients with active systemic lupus erythematosus may have lower-than-normal levels of C3 and C4, and these component levels may be monitored as a rough index of disease activity.
Today's Top News Stories | • | Falls Are Top Cause of Injury, Death Among Elderly - Jul 19, 2008, 09:00
Not all homes are the same, but common sense measures can reduce the risk, expert says. | • | Heart Blood Vessels Grown in the Lab - Jul 18, 2008, 19:00
Could offer a future alternative to bypass surgery, researchers say. | • | Clinical Trials Update: July 18, 2008 - Jul 18, 2008, 09:24
- Breast Cancer
- Hot Flashes
- Emphysema
| • | Loud Music in Bars Hastens Drinking - Jul 18, 2008, 16:00
French researchers say blasting tunes makes patrons down more alcohol in less time. | • | Breast-Fed Babies Have Fewer GI Infections - Jul 18, 2008, 17:00
But they're more likely to be iron-deficient, study finds. |
|
