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Test Code SFLC Kappa and Lambda Free Light Chains, Serum

Additional Codes

Epic Test ID


Performing Laboratory

Bronson Methodist Hospital Laboratory

Reference Values

Kappa free light chains: 3.30-19.40 mg/L

Lambda free light chains: 5.71-26.30 mg/L

Free kappa/lambda ratio: 0.26-1.65*

*Ratio may be up to 3.1 in patients with renal insufficiency or
polyclonal hypergammopathy.


Turbidimetry by FreeLite

Includes free kappa, free lambda, and free kappa/lambda light
chains ratio.

Specimen Requirements

Specimen Type: Serum

Container/Tube: Gold top serum gel or
plain red top
Specimen Volume: Preferred 1 mL

Specimen Minimum Volume : Minimum 0.5 mL

Specimen Transport Temperature


Day(s) Test Set Up

Monday through Friday

Test Classification and CPT Coding

83883 × 2