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Test ID FLCP Immunoglobulin Free Light Chains, Serum

Useful For

Monitoring serum from patients with monoclonal light chain diseases without a M-spike on protein electrophoresis

Method Name

Nephelometry

Reporting Name

Immunoglobulin Free Light Chains, S

Specimen Type

Serum


Specimen Required


Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Specimen Volume: 1 mL


Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 28 days
  Frozen  28 days
  Ambient  72 hours

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 RATIO

0.26-1.65

Day(s) and Time(s) Performed

Monday through Friday; Continuously until 3 p.m.

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

83883 x 2

LOINC Code Information

Test ID Test Order Name Order LOINC Value
FLCP Immunoglobulin Free Light Chains, S 81632-2

 

Result ID Test Result Name Result LOINC Value
KFLC Kappa Free Light Chain, S 80515-0
KLR Kappa/Lambda FLC Ratio 80517-6
LFLC Lambda Free Light Chain, S 80516-8

Test Classification

This test has been cleared, approved or is exempt by the U.S. Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

Profile Information

Test ID Reporting Name Available Separately Always Performed
KFLC Kappa Free Light Chain, S No Yes
LFLC Lambda Free Light Chain, S No Yes
KLR Kappa/Lambda FLC Ratio No Yes

Testing Algorithm

The following algorithms are available in Special Instructions:

-Laboratory Approach to the Diagnosis of Amyloidosis

-Laboratory Screening Tests for Suspected Multiple Myeloma

NY State Approved

Yes

Forms

If not ordering electronically, complete, print, and send a General Request (T239) with the specimen.