GuideDiagnostic Laboratory Methods

Surface Plasmon Resonance

A quantum optical-electrical phenomena consisting of an alteration in light reflectance as a result of binding of molecules to a surface from which total internal reflection is occurring. Used to detect macromolecular interactions, SPR can be used as the basis for a sensor which is capable of sensitive and quantitative measurement of a broad spectrum of chemical and biological entities.

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Updated
2026-10-27
Author
National Cancer Institute (source definition)
Reviewer
Automated source check (NCI definition)

What it is

A quantum optical-electrical phenomena consisting of an alteration in light reflectance as a result of binding of molecules to a surface from which total internal reflection is occurring. Used to detect macromolecular interactions, SPR can be used as the basis for a sensor which is capable of sensitive and quantitative measurement of a broad spectrum of chemical and biological entities.

Source: National Cancer Institute, NCI Thesaurus 26.09d, C18117. NCI definition, reproduced without modification under CC BY 4.0.

Source identity and definition checked automatically on 2026-10-20. No individual clinical interpretation or human reviewer is asserted.

Compliance note

Reference intervals and interpretation depend on the laboratory, specimen, method and clinical context. This source definition is educational information; it does not establish a diagnosis, product approval or suitability for an individual.

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