Free Light Chains, Serum

Test Includes

Serum Free Light Chains (Kappa and Lambda Immunoglobulin) and Kappa/Lambda Ratio

Specimen Tube Type Transport

Non-gel red top tube

Container Whole Blood Required

7 mL whole blood in a non-gel red top tube

Summary Test Name

Free Light Chains, Serum

Specimen Preparation Outreach

Spin after clotting, separate serum into a plastic 12X75 pour off tube. Cap and refrigerate until the courier pickup.

Specimen Stability

21 days at 2 - 8 degrees C. Up to 2 months at -20 degrees C

Minimum Volume

0.2 mL serum

Specimen Transport

Refrigerate

Specimen Preparation In House

Allow to clot after collection. Spin and freeze until analysis.

Stat Availability

Not available stat

Preferred Volume

0.5 mL serum

Reference Value

Normal Adult Serum	Mean conc. (mg/dl)	Median conc. (mg/dl)	95 Percentile range (mg/dl)
Free Kappa	0.836	0.730	0.330 - 1.940
Free Lambda	1.343	1.240	0.571 - 2.630
	Mean	Median	Total Range
Kappa/Lambda Ratio	0.63	0.6	0.26 - 1.62