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Free Kappa & Lambda light chains, urine

Item Value
Approval req'd? No
Available Stat? No
Test code FRULC
Test group light chains
Performed by Quest
Sendout? Yes
Method Nephelometry
Container type 24 hour urine container or urine cup

Click here for Urine Preservative Requirements
Amount to Collect Complete 24 hour urine output or 10 mL random urine
Sample type 24 hour or random urine
Preferred volume 2 mL urine
Min. Volume 1 mL urine
Processing notes Refrigerate sample. Order Quest test # 11233X.
Normal range
Synonyms K/L ratio
Stability Room temperature 1 week, refrigerated 3 weeks, frozen at -20C 3 months
Turn around times Set up 5 days per week. Turn around 2-4 days
Additional information Polyclonal Immunoglobulin light chains (kappa and Lambda) normally occur in a ratio of 2:1, whereas monoclonal immunoglobulin light chains exhibit only one light chain type, either kappa or lambda. A kappa:lambda ratio outside 2:1 is an indication of a monoclonal gammopathy.
CPT coding 83883-90 x 2
LOINC code 41759-2
Last Updated 6/21/2016 12:25:49
Entry Number 1135
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