Test Directory

Immunoglobulin Free Light Chains, Serum

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Updated Test Information:

Test Description
Immunoglobulin Free Light Chains, Serum
Synonym(s)
Immunoglobulin Free Light Chains
Test ID
FLCP
General Information
Useful for:
Monitoring serum from patients with monoclonal light chain diseases without a M-spike on protein electrophoresis
Specimen Type
Serum
Specimen Requirements
SST
Additional Processing Details
0.5 mL
Stability
Refrigerated (preferred) 28 days
Frozen 28 days
Ambient 72 hours
Unacceptable Specimen Conditions
Gross hemolysis OK
Gross lipemia Reject
Gross icterus OK
Methodology
Nephelometry
Estimated TAT
1-2 days
Testing Schedule
Monday-Saturday
Test Includes
KFLC Kappa Free Light Chain
LFLC Lambda Free Light Chain
KLR Kappa/Lambda FLC Ratio
CPT Code(s)
83883x2
Reference Range

KAPPA-FREE LIGHT CHAIN
0.33-1.94 mg/dL

LAMBDA-FREE LIGHT CHAIN
0.57-2.63 mg/dL

KAPPA/LAMBDA FLC RATIO
0.26-1.65

Performing Lab
Mayo
LOINC Code(s)
80515-0, 80517-6, 80516-8