Kappa/Lambda Quantitative Free Light Chains with Ratio, Serum : ARUP Lab Tests

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0055167: Kappa/Lambda Quantitative Free Light Chains with Ratio, Serum

Test Mnemonic: KAP/LAM F
Methodology: Nephelometry Performed: Mon, Thu Reported: 1-5 days

Specimen Required:
Collect: One 4 mL SST. Transport: 2 mL serum at 2-8°C. (Min: 0.5 mL) Submit specimen in an ARUP Standard Transport Tube. Remarks: Remove serum from cells ASAP. Unacceptable Conditions: Plasma or ambient specimens. Stability: After separation from cells: Ambient: 2 hours; Refrigerated: 1 week; Frozen: 2 weeks

Reference Interval:

Test Number	Components	Reference Interval
	Lambda Quantitative Free Light Chains, Serum	0.57-2.63 mg/dL
	Kappa Quantitative Free Light Chains, Serum	0.33 - 1.94 mg/dL
	Kappa/Lambda Free Light Chain Ratio, Serum	0.26-1.65

Note:
This assay is highly sensitive to increasing concentrations of monoclonal free kappa or free lambda light chains in the serum of patients with evolving or relapsing myelomas.

CPT Code(s):
83883 Kappa; 83883 Lambda

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