Test ID: ZG549
Component(s): Z2886 Free Kappa Lt Chains,Ur LOINC: 38176-4, Z2887 Free Lambda Lt Chains,Ur LOINC: 38178-0, Z2888 Kappa/Lambda Ratio,U LOINC: 41759-2
CPT code: 83521X2
LOINC:
Specimen Type: Plastic Random or 24hr urine container
Frequency: 2 – 4 days
Instructions: 1.5 mL Urine from Plastic urine container, Ambient. Min 1 mL.
Text: A serum sample is preferred for FLC since FLC spill into the urine only after the tubular reabsorptive capacity is exceeded. The serum FLC ratio has been shown to be abnormal in patients with monoclonal gammopathy despite normal urine FLC ratios. Higher levels of polyclonal FLC in urine may be indicative of kidney or autoimmune disease.
Methodology: Turbidimetric