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Test Code C2 C2 Complement

Clinical System Name

C2 Complement

Sample Requirements

Specimen: Whole Blood

Container(s): Gold SST or Red or Lavender/EDTA

Preferred Vol: 2.0 mL

Minimum Vol: 0.2 mL


Note:      Send to lab ASAP to be processed.        Send to lab promptly.SSSSSSSSe

Processing Instructions

Reject due to: Serum not separated within one hour.

Spin: Y

Aliquot: Y

Temp: -20 C

Storage location: Spin and freeze within 1 hour of collection. Deliver to CPA freezer send-outs rack. Acceptable room temp or refrigerated as long as sample is spun within 1 hour.



Off-site collection: Spin and refrigerate serum or plasma within 1 hour of collection and transfer specimen into plastic aliquot container. Transport refrigerated.


Specimen Type Temperature Time
Serum Room temp 28 d
  Refrigerated 28 d
  Frozen 28 d



STAT Performed TAT
N  M, W 4 - 9 d


Performing Laboratory

Quest Diagnostics - Nichols Institute

33608 Ortega Highway
San Juan Capistrano, CA 92690-6130


Phone Number: (800) 553-5445


Department:  Send Outs


Phone Number: (206) 987-2563




Reference Range

1.6-3.5 mg/dL


Method: Radial Immunodiffusion (RID)

Analytical Volume: 0.1 mL serum or plasma


CPT Codes



Send Out Instructions


Reference Test Name:

Complement Component C2 (433X)

Reference Test Number:



Send out M - F with Quest courier.