|Test List||A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #|
Complement Component C4cTest Code
1 mL serum
Serum should be separated immediately from clot.
Plastic screw-cap vial
Room temperature: 72 hours
Refrigerated: 7 days
Frozen (-20°C): 30 days
Frozen (-70°C): 90 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Gross lipemia • CSF • Plasma • 3.2% sodium citrate (light blue-top) tube • 3.8% sodium citrate (lt. blue-top) tube
Decreased C4 level is associated with acute systemic lupus erythematosis, glomerulonephritis, immune complex disease, cryoglobulinemia, congenital C4 deficiency and generalized autoimmune disease.
|Quest Diagnostics Nichols Institute|
|14225 Newbrook Drive|
|Chantilly, VA 20153|