Advanced Diagnostic Laboratories

Collect

Plasma from a lavender top (K2-EDTA) tube is the only acceptable sample type. Mix sample thoroughly. Keep tubes cold on wet ice or with a cold pack after collection.

Patient Prep

Within 30 minutes of venipuncture, centrifuge the collection tube at 1600(±200) x g (rcf) at 4°C (± 2°C) for 15 (± 1) minutes. Transfer the cell-free plasma to a clean tube and immediately store samples at -20°C, or freeze at -60°C or below in an ultra-low freezer.

Preferred volume: 1 ml

Plasma EDTA Stability: 

-20°C - up to 2 weeks

-60°C or below in an ultra-low freezer - up to 2 years

Ambient temperature for centrifugation is acceptable provided that the time between collection and storage is minimized (approximately 30 minutes).

 

Pediatric Collection

Minimum volume: 0.5 mL plasma, frozen.

Unacceptable Conditions

Thawed specimen or specimens stored at room temperature prior to shipment.

Storage Transport Temp

Send frozen plasma Priority Overnight via FedEx and in a well-insulated container on dry ice.

Stability

-20°C - up to 2 weeks

-60°C or below in an ultra-low freezer - up to 2 years

Notes

Additional testing time may be needed for less than perfect samples or confirmatory/reflex testing.

Performed

  

Methodology

Radioimmunoassay (RIA)

Turnaround Time

21 Business days

Department

Complement Lab

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

Study Offerings

RUO
CAP/CLIA

Related Tests

C4AL

Reference Interval

Human Male: 0-780 ng/mL
Human Female: 0-780 ng/mL

CPT Code

86160

New York Approved

Legacy

FDA

LDT