Test Code FC4AL C4 Level by RIA
Specimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Container/Tube: Lavender top (plasma gel tubes are not acceptable)
Submission Container/Tube: Plastic vial
Specimen Volume: 1.5 mL Plasma
Collection Instructions:
1. Mix well.
2. Within 30 minutes of collection centrifuge at 1600 (±200) x g (rcf) at 4° C for 15 minutes.
3. Aliquot 1.5 mL of plasma into a plastic vial.
4. Freeze plasma immediately at -20° C for up to 4 weeks or, ideally, at -60° C or below for up to 1 year.
5. Send frozen.
Method Name
Radioimmunoassay (RIA)
Reporting Name
C4a LevelSpecimen Type
Plasma EDTASpecimen Minimum Volume
Plasma: 0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma EDTA | Frozen | 365 days |
Reject Due To
| Gross hemolysis | Reject |
Reference Values
0-2830 ng/mL
Performing Laboratory
National Jewish HealthCPT Code Information
86160
Day(s) Performed
Monday through Friday