LOINC Code 80515-0: Immunoglobulin light chains.kappa.free Nephelometry (S) [Mass/Vol]

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Immunoglobulin light chains.kappa.free. It is commonly used with the system or sample type Ser.

When is it used?

• Used in lab systems, EHRs, and clinical data exchange.
• May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
• Status: ACTIVE
• Order vs observation: Both
• Method: Nephelometry

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• Kappa light chains.free [Mass/volume] in Serum by Nephelometry
• Immunoglobulin light chains.kappa.free
• This nephelometric assay provides a sensitive test for monitoring patients with monoclonal light chain diseases but no M-spike on protein electrophoresis, and may be more sensitive than immunofixation for detection of monoclonal free light chains. In some patients with non-secretory myeloma, systemic amyloidosis, or light chain deposition disease, the nephelometric free light chain assay provides a positive identification of a monoclonal serum light chain when the serum immunofixation is negative.
• Bence Jones protein; BJ Protein; BJP; Chain; Chemistry; FR; Hematology; Heme; Immune globulin; Immuno; Immunoglob; Immunoglobin; Imunoglbon; Imunoglobn; Kappa LC; Kappa LC Free; Level; Light scattering; Mass concentration; Nephelom; Non-protein bound; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; SR

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Related SNOMED CT concepts

Related observations and tests

Common synonyms

Frequently asked questions