This test is used to measure the level of serum Complement C4. C4 is also used to detect individuals with inborn deficiency of this factor or those with immunologic disease in whom over activation of the immune system causes reduced levels of this complement factor. These diseases include lupus erythematosus, serum sickness, certain glomerulonephritides, chronic active hepatitis, and others.
Complement C4 has been identified a a marker for identifying systemic lupus erythematosus (SLE), a chronic, multisystemic, inflammatory disorder affecting joints, nerves, heart, skin, eyes etc with some amount of irreversible damage.
No special preparation is necessary prior to blood sample collection.
Estimated Turn Around For Results:
2-10 Business Days
For an exact turnaround time for results, please contact us at Personalabs and we will contact the lab on your behalf as turnaround times vary depending on testing location or lab testing provider.