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.