KAPPA/LAMBDA QUANTITATIVE FREE LIGHT CHAINS

Specimen Required
Draw blood in a SST. Centrifuge, separate and send 2.0 mL serum (0.5 mL minimum) refrigerated in a screw-capped plastic vial.

Rejection Criteria
Hemolyzed or lipemic specimens

Methodology
Nephelometry

Stability
Room Temperature: Unacceptable; Refrigerated: 3
weeks; Frozen: 2 months

Reference Range
Lambda Quantitation Free Light Chains, Serum   0.57-2.63 mg/dL  
Kappa Quantitative Free Light Chains, Serum   0.33-1.94 mg/dL  
Kappa/Lambda Light Chain Ratio, Serum   0.26-1.65  

Performed
Monday-Friday

Turnaround Time3 days
Test CodeKLFLC
CPT-4 Code (s)
83883 x 2
LOINC Codes
Free Kappa Light Chain:   80515-0  
Free Lambda Light Chain:   80516-8  
Kappa/Lambda FLC Ratio:   80517-6  

Warde
Medical
Laboratory