ARUP's Laboratory Test Directory

Kappa Free Light Chains (Bence Jones Protein), Quantitative, Urine : 0050689

Mnemonic: BJQNTKAPP

Methodology: Quantitative Nephelometry/Qualitative Immunofixation Electrophoresis
Performed: Mon-Fri
Reported: 1-5 days
Specimen Required: Collect: 24-hour urine. Refrigerate during collection. Also acceptable: Urine supernate.

Specimen Preparation: Transfer two 4 mL aliquots from a well-mixed 24-hour urine collection to individual ARUP Standard Transport Tubes. (Min: 3 mL) Record total volume and collection time interval on transport tube and test request form.

Storage/Transport Temperature: Refrigerated.

Unacceptable Conditions: Non-refrigerated specimens.

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           
Free Kappa Light Chains: 0.14 - 2.42 mg/dL
Free Kappa Excretion/day: By report
IFE Interpretation: By report
CPT Code(s): 84156; 86335; 83883
Cross References: Free Kappa Light Chains, IFE (Bence Jones Protein, Quantitative Free Kappa Light Chains, Urine)