Hemolysis and/or plasma samples. Avoid lipemic samples and samples with repeat thaw exposure.
Collection Comments
Process within 2 hours of collection. Fasting patient preferred. Allow Gold tube to sit for 30 minutes to form clot. Spin for 10 minutes at 1100-1300 g in a swing bucket unit or 15 minutes in a fixed angle to separate cells from serum. Refrigerate spuntube. Remember to properly label tube with patient name, DOB, test and collect date. Serum from Red tube must be transfered to an aliquot tube.
The serum free light chain test consists of measurements of the kappa and lambda light chains and calculation of the kappa / lambda free light chain ratio. This test is ordered when there is a suspicion of smoldering or active multiple myeloma, MGUS, plasmacytoma or amyloidosis. The free light chain test is also used to assess therapy for patients known to have one of these plasma cell malignancies.
Performed
Monday - Friday; Days
Methodology
Turbidimetric
Reported
2 days
Performing Lab
Special Chemistry
Synonyms
6020
Free Kappa Ser QN
Free Lambda Ser QN
Free Kappa and Lambda Light Chains (FLC) Ser QN
Clinical Interpretation
Analysis performed using Binding Site turbidimetric methodology on the Optilite platform. Patient results determined by assays using different methods from different manufacturers may not be comparable.
Reference Chart
Free Light Chains Ser QN
Reference Range
Free Kappa L.C. Ser QN
3.30-19.40 mg/L
Free Lambda L.C. Ser QN
5.71-26.30 mg/L
Free Kappa/Lambda Ratio
0.26-1.65
CPT Codes
83883 (x2)
LOINC Codes
NAME
LOINC
Order
Free Light Chains Ser QN
57778-3
Result
Free Kappa L.C. Ser QN
36916-5
Free Kappa/Lambda Ratio
48378-4
Free Lambda L.C. Ser QN
33944-0
Test Code (Outreach Synonym)
6020
Catalog Code
175730546
Collection
Collect
Blood, Gold
Preferred Draw Volume
1 mL
Minimum Draw Volume
1 mL
Other Acceptable Containers
Red
Pediatric Collection
1 Full microtainer
Unacceptable Conditions
Hemolysis and/or plasma samples. Avoid lipemic samples and samples with repeat thaw exposure.
Collection Comments
Process within 2 hours of collection. Fasting patient preferred. Allow Gold tube to sit for 30 minutes to form clot. Spin for 10 minutes at 1100-1300 g in a swing bucket unit or 15 minutes in a fixed angle to separate cells from serum. Refrigerate spuntube. Remember to properly label tube with patient name, DOB, test and collect date. Serum from Red tube must be transfered to an aliquot tube.
The serum free light chain test consists of measurements of the kappa and lambda light chains and calculation of the kappa / lambda free light chain ratio. This test is ordered when there is a suspicion of smoldering or active multiple myeloma, MGUS, plasmacytoma or amyloidosis. The free light chain test is also used to assess therapy for patients known to have one of these plasma cell malignancies.
Performed
Monday - Friday; Days
Methodology
Turbidimetric
Reported
2 days
Performing Lab
Special Chemistry
Synonyms
6020
Free Kappa Ser QN
Free Lambda Ser QN
Free Kappa and Lambda Light Chains (FLC) Ser QN
Result Interpretation
Clinical Interpretation
Analysis performed using Binding Site turbidimetric methodology on the Optilite platform. Patient results determined by assays using different methods from different manufacturers may not be comparable.
