ARUP's Laboratory Test Directory

Kappa and Lambda Free Light Chains (Bence Jones Protein), Qualitative, Urine : 0050161

Mnemonic: BJQUAL

Ordering Recommendation: Aids in the diagnosis of plasma cell dyscrasia. Preferred test is the quantitative test [Kappa and Lambda Free Light Chains (Bence Jones Protein), Quantitative, Urine (0050618)].
Methodology: Qualitative Immunofixation Electrophoresis/Quantitative Nephelometry
Performed: Mon-Fri
Reported: 1-5 days
Specimen Required: Collect: 24-hour urine. Refrigerate during collection. Also acceptable: Random specimens and urine supernate.

Specimen Preparation: Transfer two 4 mL aliquots from a well-mixed 24-hour urine collection to individual ARUP Standard Transport Tubes. (Min: 4 mL) Record total volume and collection time interval on transport tube and test request form.

Storage/Transport Temperature: Refrigerated.

Stability (collection to initiation of testing): Ambient: 2 hours; Refrigerated: 1 week; Frozen: Unacceptable
Reference Interval:
Total Protein: 10-140 mg/d               
Albumin: Detected                                           
Alpha-1 Globulins: None detected                 
Alpha-2 Globulins: None detected 
Beta Globulins: None detected
Gamma Globulins: None detected
IFE Interpretation: By report
CPT Code(s): 84156; 86335
Cross References: Free Kappa & Lambda Light Chains, IFE (Bence Jones Protein, Qualitative Free Kappa & Lambda Light Chains, Urine)