URINE KAPPA/LAMBDA QUANTITATIVE FREE LIGHT CHAINS

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This test was updated on 06/30/2026. Click here to view the changes.

Test Details

Mnemonic

UFKL

Ordering Code

3000974

CPT-4 Code(s)

83521x2

Specimen Information

Collect

Random urine

Specimen Preparation

Send 2.0 mL urine in a screw capped plastic vial.

Alternate Specimen

24-hour urine

Minimum Volume

1.0 mL

Transport Temperature

Refrigerated

Rejection Criteria

Microbial contaminated; gross hemolysis

Stability

Room temperature: Undetermined
Refrigerated: 21 days
Frozen: 6 months

Methodology

Immunoturbidimetry/Optilite
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Reference Range

Kappa Light Chain, Free, Urine: ≤ 32.90 mg/L
Lambda Light Chain, Free, Urine: ≤ 3.79 mg/L
Kappa/Lambda Light Chains Free Ratio, Urine: ≤ 8.69
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Performing Laboratory

Warde Medical Laboratory
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New York DOH Approval Status

Yes
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Turnaround Time
1-5 days
Performed
Tuesday, Friday
Legacy Code UFKL
Example Report
Download

Resources

Interface Map for UFKL

Test Name Ordering Code Result Code Component Name LOINC Code AOE Prompt Units
Urine Kappa/Lambda Quantitative Free Light Chains3000974
3000976Urine Free Kappa Light Chain38176-4No
3000977Urine Free Lambda Light Chain38178-4No
3000978Urine Kappa/Lambda FLC Ratio41759-2No

The CPT codes provided are for general informational purposes only and are based on an interpretation of AMA guidance. It is the sole responsibility of the billing party to determine CPT codes. Any questions regarding coding should be directed to the paying party.

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