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Test Code LAB151 C4 Complement

Clinical System Name

C4 Complement

Synonyms

C4

Sample Requirements

Specimen: Whole blood

Container(s): Gold SST, Gold Microtainer, Red, Lt. Green/Lithium Heparin, Dark Green/Sodium Heparin

Preferred Vol: 2.0 mL

Minimum Vol: 1.0 mL

 

Note:Avoid hemolysis.  Can share volume with C3, Cystatin C, RF

Processing Instructions

Reject due to

Spin: Y

Aliquot: Y

Temp: 2-8 C

Storage location: CPA refrigerator, FrigA rack.

 

Off-site collection: Spin and aliquot 0.5mL serum/plasma in plastic tube. Send refrigerated.

Stability

Specimen Type Temperature Time
gel separator with serum/plasma Refrigerated  
separated serum/plasma Room temp  
  Refrigerated 7 d
  Frozen  1 m

 

Availability

STAT Performed TAT
N M - F, day shift 1-3 d

 

Performing Laboratory

Seattle Children's Laboratory    

Department

Department:  Chemistry

Location: Chem 

Phone Number:  (206) 987-2617

CPT Codes

86160

Methodology

Method: Ortho Vitros 4600

Analytical Volume: 0.4 mL serum/plasma (absolute minimum is 0.250 mL serum/plasma)

Limitations: Test is affected by repeated freeze-thaw cycles.  

Reference Range

 

  mg/dL
<1 year 8 - 34
1 year and older  16 - 52