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Test Code MISC1WARDEC4AL C4a Level

Department

SEND OUTS

Reference Lab Test Number

C4AL

Collection Requirements

Plasma from a lavender top (EDTA) tube is the only acceptable sample type.

Mix sample thoroughly.

Refer To

Warde Medical Laboratory

Primary Collection Container

Lavender 4 mL (K3EDTA)

Alternate Collection Container

Lavender Microtainer

Transport

Plasma frozen

Preferred Transport Temperature

Frozen

Processing

Centrifuge within 30 minutes of collection and remove cell-free plasma. Send 1.0 mL plasma (0.5 mL minimum) frozen in a screw-capped plastic vial.

Stability

Ambient: Unacceptable

Refrigerated; Unacceptable

Frozen (-70°C): 1 year

Minimum Testing Volume

500 µL

Reference Range

0-2830 ng/mL

Methodology

Radioimmunoassay (RIA)

Performed

1st and 3rd Thursday of the month.

Reported

22-29 days

CPT Codes

-86160

Unacceptable Conditions

Specimens received not frozen.