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HelpTest ID FQFKL Kappa and Lambda Free Light Chains (Bence Jones Protein), Quantitative, Urine
Method Name
Qualitative Immunofixation Electrophoresis
Quantitative Nephelometry
Reporting Name
Quant Free Kappa/Lambda Light ChainsSpecimen Type
UrineTwo 4 mL aliquots from a well mixed 24-hour urine collection. No preservative. Refrigerate specimen during collection. Send specimen refrigerate in 2 plastic, 6 mL tubes. (MML Supply T465).
Note: 1. Keep refrigerate at all times
2. Total volume and collection time interval required.
Specimen Minimum Volume
4 mL (2 vials 2 mL each)
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Urine | Refrigerated (preferred) | 7 days |
| Ambient | 2 hours |
Reference Values
Total Protein: 10-140 mg/d
Albumin, Urine: Detected
Alpha-1, Globulins, Urine: None Detected
Alpha-2, Globulins, Urine: None Detected
Beta Globulins, Urine: None Detected
Gamma, Urine: None Detected
Free Urinary Kappa Light Chains: 0.14-2.42 mg/dL
Free Urinary Kappa Excretion/Day: by report
Free Urinary Lambda Light Chains: 0.02-0.67 mg/dL
Free Urinary Lambda Excretion/Day: by report
Free Urinary Kappa/Lambda Ratio: 2.04-10.37 (ratio)
IFE Interpretation by report
Test Information: Total Protein
Total urinary protein is determined nephelometrically by adding the albumin and Kappa and/or Lambda light chains. This value may not agree with the total protein as determined by chemical methods, which characteristically underestimate urinary light chains.
Day(s) Performed
Monday through Friday
Report Available
1 - 5 daysPerforming Laboratory
ARUP LaboratoriesCPT Code Information
83883/x2 Nephelometry, kappa/lambda
84156/ Total Protein
86335 /Immunofixation electrophoresis; other fluids