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Test Code IGLTS Immunoglobulin Free Light Chains, Serum

Important Note

Order synonym IGLTS

 

Use Sunquest code IGLTS to order

 

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

Performing Laboratory

Mayo Clinic Laboratories in Rochester

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.

CPT Code Information

83883 x 2

Reject Due To

Gross hemolysis OK
Gross lipemia Reject
Gross icterus OK

Method Name

Nephelometry

Forms

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

Secondary ID

84190