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Test Code FC4AL C4 Level by RIA


Specimen Required


Container/Tube: Lavender top tube

Preferred: Lavender top tube

Acceptable: Lavender top tube

Specimen Volume: 2 mL

Collection Instructions: Draw blood in a lavender top (EDTA) tubes(s), plasma gel tube(s) is not acceptable. Mix well, centrifuge at room temperature within one half hour of draw (preferable immediately after venipuncture) and freeze immediately on dry ice or at -70 C. Send 1 mL of EDTA plasma frozen in plastic vial.

 

Complete and submit with specimen:

1. National Jewish Complement request form


Method Name

Radioimmunoassay (RIA)

Reporting Name

C4a Level

Specimen Type

Plasma EDTA

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time
Plasma EDTA Frozen 365 days

Reject Due To

Hemolysis Mild OK; Gross reject
Lipemia N/A
Icterus N/A
Other N/A

Reference Values

0 - 2830 ng/mL

Performing Laboratory

National Jewish Health

CPT Code Information

86160

Day(s) Performed

Monday through Friday

Report Available

20 to 44 days