Kappa/Lambda Light Chains, Free with Ratio and Reflex to Immunofixation, Serum (KLFRRI)

Test Code
LAB2325

Quest Code
15122

Alias/See Also
KLFRRI, light chains

CPT Codes
83520 (x2)

Includes
If Kappa/Lambda, Free is <0.26 or >1.65, Immunofixation will be performed at an additional charge (CPT code(s): 86334).

Preferred Specimen
2 mL serum

Minimum Volume
1 mL

Transport Container
Preferred: Gold top; Acceptable: Plain red top

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 72 hours
Refrigerated: 7 days
Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Grossly lipemic • Microbially contaminated • Heavy visible particulate

Methodology
Immunoturbidimetric

Reference Range
Kappa Light Chain, Free, Serum 3.3-19.4 mg/L
Lambda Light Chain, Free, Serum 5.7-26.3 mg/L
Kappa/Lambda Light Chains Free with Ratio, Serum 0.26-1.65


Performing Laboratory
Quest Diagnostics - South Region




The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.