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HelpTest Code FLCS Immunoglobulin Free Light Chains, Serum
Specimen Required
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Secondary ID
608250Profile Information
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| KFLCS | Kappa Free Light Chain, S | No | Yes |
| LFLCS | Lambda Free Light Chain, S | No | Yes |
| KLRS | Kappa/Lambda FLC Ratio | No | Yes |
Testing Algorithm
The following algorithms are available:
Special Instructions
Method Name
Turbidimetry
Specimen Type
SerumSpecimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 28 days |
| Frozen | 28 days | |
| Ambient | 72 hours |
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | Reject |
| Gross icterus | OK |
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
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
83521 x 2
Day(s) Performed
Monday through Friday
Report Available
Same day/1 to 2 daysForms
If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:
-General Request (T239)
-Hematopathology/Cytogenetics Test Request (T726)
-Renal Diagnostics Test Request (T830)