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

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

Mnemonic: KAP/LAM F

Methodology:	Quantitative Nephelometry
Performed:	Mon, Thu
Reported:	1-5 days
Specimen Required:	Collect: Serum separator tube. Specimen Preparation: Remove serum from cells ASAP or within 2 hours of collection. Transfer 2 mL serum to an ARUP Standard Transport Tube. (Min: 0.5 mL) Storage/Transport Temperature: Refrigerated. Unacceptable Conditions: Plasma. Room temperature specimens. Stability (collection to initiation of testing): 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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