Test ID: QG045
Component(s): Q0197 Free Kappa Lt Chains,S LOINC: 36916-5, Q0198 Free Lambda Lt Chains,S LOINC: 33944-0, Q0199 Kappa/Lambda Ratio,S LOINC: 48378-4
CPT code: 83521X2
LOINC:
Specimen Type: Red or SST
Frequency: 1 – 3 days
Instructions: 0.5 mL Serum from Red or SST, Refrigerated. Min 0.2 mL.
Text: Immunoglobulin molecules consist of two identical heavy chains and two identical light chains. Elevated serum levels of monoclonal FLC are associated with malignant plasma cell proliferation (eg,multiple myeloma), primary amyloidosis, and light chain deposition disease. Raised levels of polyclonal FLC may be associated with autoimmune diseases such as SLE.
Methodology: Turbidimetric