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Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog
SERUM FREE LIGHT CHAINS |
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ORDERING INFORMATION: |
Geisinger Epic Procedure Code: LAB2567 Geisinger Epic ID: 15049 | |
SPECIMEN COLLECTION |
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Specimen type: |
Serum | |
Preferred collection container: |
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Specimen required: |
2 mL aliquot serum; minimum 0.5 mL. | |
| SPECIMEN PROCESSING |
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Specimen processing instructions: |
Allow serum to clot. Centrifuge to separate serum within 2 hours of collection. | |
Transport temperature: |
Refrigerated. | |
Specimen stability: |
Refrigerated: 3 weeks. Frozen: 3 months. | |
Rejection criteria: |
Stability limits exceeded. | |
TEST DETAILS |
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Reference interval: |
Kappa FLC: 3.30-19.40 mg/L. Lambda FLC: 5.71-26.30 mg/L Kappa/Lambda FLC Ratio: 0.26-1.65. |
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CPT code(s): |
83521 x 2 | |
| Note: The billing party has sole responsibility for CPT coding. Any questions regarding coding should be directed to the payer being billed. The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only. | ||
Test includes: |
Kappa FLC, Lambda FLC, Kappa/Lambda FLC Ratio. | |
Methodology: |
Immunoturbidity |
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Synonyms: |
Kappa Lambda Serum; Free Light chains, KLS
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Clinical significance: |
Measurement of the various amounts of the different types of light chain aids in the diagnosis and monitoring of multiple myleoma, lymphocyte neoplasm, Waldenstrom's macroglobulinemia and connective tissues diseases such as systemic lupus erythematosus. | |
Doctoral Director(s:) |
Hoi-Ying Elsie Yu, PhD, DABCC Sheng-Ying (Margaret) Lo, PhD, DABCC |
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| Review Date: | 12/29/2022 | |