Specimens exposed to repeated freeze/thaw cycles. Microbially contaminated specimens.
Storage/Transport Temperature
Refrigerated urine
Stability (from collection to initiation)
Refrigerated: 3 weeks; Frozen: up to 6 months
Ordering Recommendations
The urine 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; Days
Methodology
Turbidimetric
Reported
2 - 8 days
Performing Lab
Special Chemistry
Synonyms
6022
Free Kappa Ur QN
Free Lambda Ur QN
URN Free Light Chains
Urine Free Light Chains
Free Kappa and Lambda Light Chains (FLC), Ur 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 Ur QN
Reference Range
Free Kappa L.C. Ur Qn
0.00-32.90 mg/L
Free Lambda L.C. Ur QN
0.00-3.79 mg/L
Free Kap/Lam Ratio Ur
0.46-4.00
CPT Codes
83883 (x2)
LOINC Codes
NAME
LOINC
Order
Free Light Chains Ur QN
43110-6
Result
Free Kap/Lam Ratio Ur
41759-2
Free Kappa L.C. Ur QN
38176-4
Free Lambda L.C. Ur QN
38178-0
Test Code (Outreach Synonym)
6022
Catalog Code
175731417
Collection
Collect
Urine, No Additive
Preferred Draw Volume
6 mL
Minimum Draw Volume
1 mL urine
Other Acceptable Containers
Urine Transport Tube
Unacceptable Conditions
Specimens exposed to repeated freeze/thaw cycles. Microbially contaminated specimens.
Storage/Transport Temperature
Refrigerated urine
Stability (from collection to initiation)
Refrigerated: 3 weeks; Frozen: up to 6 months
Ordering
Ordering Recommendations
The urine 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; Days
Methodology
Turbidimetric
Reported
2 - 8 days
Performing Lab
Special Chemistry
Synonyms
6022
Free Kappa Ur QN
Free Lambda Ur QN
URN Free Light Chains
Urine Free Light Chains
Free Kappa and Lambda Light Chains (FLC), Ur 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.
