Serum Free Light Chains (sFLC)

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Serum free light chains (sFLC)

Reference range, target level, or decision threshold

kappa: 3.3-19.4 mg/L

lambda: 5.7-26.3 mg/L

kappa/lambda: 0.26-1.65 (0.37-3.1 in chronic kidney disease)

Interpretation of results

↑ Monoclonal gammopathies with increased kappa or lambda chains: see Plasma Cell Myeloma (PCM)