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.
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.
Submit With Order
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 NameLOINC
0055168Kappa Qnt Free Light Chains36916-5
0055169Lambda Qnt Free Light Chains33944-0
0055179Kappa/Lambda Free Light Chain Ratio40844-3
* 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.
Aliases
  • Kappa Qnt Free Light Chains
  • Kappa/Lambda Free Light Chain Ratio
  • Lambda Qnt Free Light Chains