Kappa/Lambda Quantitative Free Light Chains with Ratio, Serum
0055167
Ordering Recommendation
Aids in the evaluation and management of multiple myeloma and related plasma cell disorders.
Submit With Order
Mnemonic
KAP/LAM F
Methodology
Quantitative Nephelometry
Performed
Mon-Fri
Reported
1-4 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
 
Collect
Serum separator tube.  
Specimen Preparation
Remove serum from cells ASAP or within 2 hours of collection. Transfer 2 mL serum to an ARUP Standard Transport Tube. (Min: 0.5 mL)  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
Plasma. Room temperature specimens.  
Remarks
 
Stability
After separation from cells: Ambient: 2 hours; Refrigerated: 1 week; Frozen: 2 weeks  
Reference Interval
Test Number Components Reference Interval
Lambda Quantitative Free Light Chains, Serum 0.57-​2.63 mg/dL
Kappa Quantitative Free Light Chains, Serum 0.33 -​ 1.94 mg/dL
Kappa/Lambda Free Light Chain Ratio, Serum 0.26-​1.65
Interpretive Data
Note
This assay is highly sensitive to increasing concentrations of monoclonal free kappa or free lambda light chains in the serum of patients with evolving or relapsing myelomas.
CPT Code(s)
83883 x2
Components
Component Test Code*Component Chart Name
0055168Kappa Qnt Free Light Chains
0055169Lambda Qnt Free Light Chains
0055179Kappa/Lambda Free Light Chain Ratio
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Cross References
  • Kappa Qnt Free Light Chains
  • Kappa/Lambda Free Light Chain Ratio
  • Lambda Qnt Free Light Chains