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Kappa/Lambda Light Chains, Free with Ratio, Serum [11234X]

Test Code

138832

CPT Code(s)

83883 (x2)

Preferred Specimen(s)

2 mL serum

Minimum Volume

1 mL

Specimen Container

Plastic screw-cap vial

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 7 days
Refrigerated: 21 days
Frozen: 90 days

Reject Criteria

Gross hemolysis • Gross lipemia • Microbially contaminated • Heavy visible particulate

Methodology

Nephelometry

Performing Laboratory

Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

Setup Schedule

Set up: Mon-Fri evening; Report available: Next day

Reference Range(s)

Kappa Light Chain, Free, Serum 3.3-19.4 mg/L
Lambda Light Chain, Free, Serum 5.7-26.3 mg/L
Kappa/Lambda Light Chains Free with Ratio, Serum 0.26-1.65

Clinical Significance

Measurement of the amounts of the different light chain types aids in the diagnosis and monitoring of multiple myeloma, lymphocytic neoplasms, Waldenstrom's macroglobulinemia, and connective tissue diseases, such as systemic lupus erythematosus.

LOINC®' Code(s)

The Result and LOINC information listed below should not be used for electronic interface maintenance with Quest Diagnostics. Please contact the Quest Diagnostics Connectivity Help Desk for more information at 800-697-9302.

NOTE: The codes listed in the table below are not orderable Test Codes.

Result
Code
Result NameLOINC CodeComponent Name
138802Kappa Light Chain, Free, S36916-5Immunoglobulin light chains.kappa.free
138822Lambda Light Chain, Free, S33944-0Immunoglobulin light chains.lambda.free

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

LOINC assignment is based on a combination of test attributes, including the method used by the performing laboratory. For tests not performed by Quest Diagnostics, codes are assigned by the performing laboratory.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.