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Immunoglobulin Free Light Chains

Source Blood
Mnemonic IFLC
Specimen Requirements

1 x 3.5 mL gold top SST tube

1 mL serum

PSC only: 1 x 5 mL orange top RST tube is acceptable within one hour of lab closing.

Specimen Handling

PSC & RRL:
Centrifuge.

Extra-regional:
Centrifuge.

Additional Information
Testing Location Immunochemistry
Testing Frequency Weekdays
Alternate Name(s) FLC; Free Light Chains; IFLC
Reference Interval

Free Kappa Light Chain 3.30 - 19.40 mg/L

Free Lambda Light Chain 5.71 - 26.30 mg/L

Free Kappa/Free Lambda Ratio 0.26 - 1.65