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Test Code C4 C4 Complement, Quantitative

Additional Codes

Hospital Ordering Code
LAB151 C4 COMPLEMENT

Specimen Requirements

Preferred Collection Container: 

SST (Serum Separator)
Light Green (Lithium Heparin Plasma Separator Tube)

 

Also Acceptable Collection Container: 

Red (No Additive)
Green No Gel (Lithium Heparin)

 

Collection Information: 

Collect blood in a serum separator or heparin plasma separator tube.

 

Transport Information: 

Centrifuge and aliquot 1.0 mL of serum or plasma into a plastic transport vial. Send frozen.

 

Minimum Sample Volume: 

0.3 mL of serum or plasma (approximately 0.6 mL of whole blood based upon a normal patient hematocrit)

 

Unacceptable Conditions: 

Specimens collected in EDTA tubes

 

Stability Comments: 

Remove serum from cells ASAP and freeze.

Stability

Refrigerated Stability: 

2 days

 

Frozen Stability: 

7 days

 

Ambient Stability: 

2 days

Performing Laboratory

Pathology Laboratory, UnityPoint Health, Des Moines

CPT

86160

Methodology

Turbidometric

Performance

Monday-Friday 8:00a to 10:00p
Saturday-Sunday 9:00a to 5:00p

 

Analytical Time: 

1 day

 

Testing Laboratory: 

Pathology Laboratory

 

Laboratory Section: 

Core Laboratory

Alias

C4 (4th Component of Complement), Serum, C4 (Fourth Component of Complement), Serum, C4 Complement Serum, C4, Serum, Complement C4, Serum, Fourth Component of Complement, Hereditary Angioedema Panel (3 tests)