Immunology & cytokines

Free kappa light chain unit converter

Free kappa immunoglobulin light chains; monoclonal gammopathy marker

Also known as: FLC kappa, Kappa FLC, Serum free kappa light chain

Converter

Enter a value in any unit and all other units fill in.

mg/dL mg/L µg/dL

Worked example

11.35 mg/L (middle of the reference range) = 1.14 mg/dL

Conversion formulas

mg/dL	mg/dL = mg/L × 0.1	mg/L = mg/dL × 10
µg/dL	µg/dL = mg/L × 100	mg/L = µg/dL × 0.01

Good to know

Free kappa light chain is reported in mg/L or mg/dL. The page converts between the units only.

mg/dL × 10 = mg/L (exact factor 10).
The range shown is a guide from the named source; targets and reference ranges differ between laboratories, methods and indications, so compare with the range on your own report.

Reference range

Unit	Adults
mg/dL	0.33 – 1.94
mg/L	3.3 – 19.4
µg/dL	330 – 1940

Source: Newcastle Hospitals Laboratories: Free Light Chain Quantitation · Last reviewed: 2026-10-19

Note from the source: Serum free kappa 3.30-19.40 mg/L; kappa/lambda ratio 0.26-1.65 (Newcastle Hospitals Laboratories)

Frequently asked questions

How do I convert Free kappa light chain from mg/L to mg/dL?

mg/dL = mg/L × 0.1. In the other direction: mg/L = mg/dL × 10.

What is the reference range of Free kappa light chain?

For adults the range is 3.3 – 19.4 mg/L (Newcastle Hospitals Laboratories: Free Light Chain Quantitation). Reference ranges differ between laboratories and partly by sex and age; use the range printed on your lab report.

Which units are used for Free kappa light chain?

Common units are mg/dL, mg/L, µg/dL.