ARUP's Laboratory Test Directory

Lambda Free Light Chains (Bence Jones Protein), Quantitative, Urine : 0050682

Mnemonic: BJQNTLAMB

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.

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 Lambda Light Chains: 0.02 - 0.67 mg/dL
Free Lambda Excretion/day: By report
IFE Interpretation: By report
CPT Code(s): 84156; 86335; 83883
Cross References: Free Lambda Light Chains, IFE (Bence Jones Protein, Quantitative Free Lambda Light Chains, Urine)