C3a Level By RIA
Test Code
C3AR
Description
Collect
Plasma from a lavender top (EDTA) tube is the only acceptable sample type. Mix sample thoroughly. Keep tubes cold on wet ice or with a cold pack after collection.
Specimen Preparation
Within 30 minutes of venipuncture, centrifuge at 4°C. Transfer the cell-free plasma to a clean tube and immediately freeze on dry ice or at -70°C or below.
Preferred volume: 1 mL
Ambient temperature for centrifuging is acceptable provided that the time between collection, spinning and decanting to the freezer, is minimized (approximately 30 minutes).
Pediatric Collection
Minimum volume: 500 µL plasma, frozen.
Unacceptable Conditions
Thawed specimen.
Storage Transport Temp
Send frozen plasma Priority Overnight via FedEx and in a well insulated container on dry ice.
Stability
Frozen at -70°C: 1 year
Methodology
Radioimmunoassay (RIA)
Reported
21 Business days
Synonyms
C3 (C3a Level);C3a anaphylatoxin;C3 anaphylatoxin (C3a Level);Radio Immuno Assay (C3a Level);Complement (C3a Level);C3ades Arg Level (C3a Level);C3a des Arg Level;C3AL
Related Tests
Reference Interval
Human Male: 0-780 ng/mL
Human Female: 0-780 ng/mL
CPT Code
86160