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Applied Optics

Applied Optics


  • Vol. 38, Iss. 25 — Sep. 1, 1999
  • pp: 5491–5498

Concentration measurements of multiple analytes in human sera by near-infrared laser Raman spectroscopy

Jianan Y. Qu, Brian C. Wilson, and David Suria  »View Author Affiliations

Applied Optics, Vol. 38, Issue 25, pp. 5491-5498 (1999)

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Our primary goal in this study is to demonstrate that near-infrared Raman spectroscopy is feasible as a rapid and reagentless analytic method for clinical diagnostics. Raman spectra were collected on human sera by use of a 785-nm excitation laser and a single-stage holographic spectrometer. A partial-least-squares method was used to predict the analyte concentrations of interest. The prediction errors of total protein, albumin, triglyceride, and glucose in human sera ranged from 1.0% to 10%, which are highly acceptable for clinical diagnosis, of their mean physiological levels. For investigating the potential application of near-infrared Raman spectroscopy in screening of therapeutical drugs and substances of abuse the concentrations of acetaminophen, ethanol, and codeine in water solution were measured in the same fashion. The errors of the Raman tests for acetaminophen and ethanol are lower than their toxic levels in human serum, and the sensitivity for detection of codeine fails to reach its toxic level.

© 1999 Optical Society of America

OCIS Codes
(170.1470) Medical optics and biotechnology : Blood or tissue constituent monitoring
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(170.5660) Medical optics and biotechnology : Raman spectroscopy

Original Manuscript: January 4, 1999
Revised Manuscript: May 27, 1999
Published: September 1, 1999

Jianan Y. Qu, Brian C. Wilson, and David Suria, "Concentration measurements of multiple analytes in human sera by near-infrared laser Raman spectroscopy," Appl. Opt. 38, 5491-5498 (1999)

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