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Test Code FLCS Immunoglobulin Free LT Chains Blood, LAB735

Methodology

Turbidimetry

Specimen Requirements

Container/Tube:

Preferred: Gold-top serum gel tube or plain, red top tube

Specimen Volume:  0.5 mL of serum

Stability:  Samples may be stored at 2-8°C for up to 21 days, but for prolonged storage they

                 should be kept frozen at -20°C or below.  Repeated freeze/thaw cycles

                 should be avoided.

Reference Values

KAPPA-FREE LIGHT CHAIN

0.33-1.94 mg/dL

 

LAMBDA-FREE LIGHT CHAIN

0.57-2.63 mg/dL

 

KAPPA/LAMBDA FLC RATION

0.26-1.65

Day(s) Test Set Up

Monday & Thursday

Test Classification and CPT Coding

83520 x 2

Performing Laboratory

St. Luke's Hospital Cedar Rapids

Useful For

Useful in detecting elevated serum levels of monoclonal FLC that are associated with malignant plasma cell proliferation (e.g. multiple myeloma), AL amyloidosis and light chain deposition disease.

Analytic Time

2 to 4 days upon receipt.