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Source-backed patient guide
A serum free light-chain test measures kappa or lambda light chains, which are parts of antibodies.
These operational details come from the laboratory catalogue. Confirm current availability and preparation with the laboratory before collection.
Patient education
A serum free light-chain test measures kappa or lambda light chains, which are parts of antibodies.
It may be requested with related laboratory tests during evaluation or monitoring of selected plasma-cell disorders. The paired values, ratio, kidney function, and clinical context matter.
Preparation varies by test and clinical context. Follow the laboratory instructions, disclose medicines and supplements, and do not change medicines unless a qualified professional tells you to.
These independent resources support the general patient education on this page. External links open outside the laboratory website.
Need this test? Contact our laboratory team to confirm current availability or referral options.
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