Vitamin D estimation– possibly use infrared to estimate vitamin D general range - Sept 2015

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Might be able to indicate that vitamin D is in one of a few ranges: low, OK, high, and perhaps too high
Guess: in a few years this might be a commercial way to estimate levels of vitamin D - perhaps without drawing blood

OXYGEN sensors can be clipped on fingers to measure blood OXYGEN saturation



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Similar sensors might estimate Vitamin D in the future

Wavelengths of a few IR LEDs which could be used
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I used to be an Instrumentation engineer - Henry Lahore


Feasibility study — vitamin d loading determination by ftir atr

ИНФОРМАЦИОННО УПРАВЛЯЮЩИЕ СИСТЕМЫ№ 3, 2015 107 УПРАВЛЕНИЕ В МЕДИЦИНЕ И БИОЛОГИИ UDC 543.2 doi:10.15217/issn1684-8853.2015.3.107
E. Simanaa, B.Sc., Electrical Engineering, eran.simana@gmail.com R. Simiana, B.Sc., Electrical Engineering, ronensimian@gmail.com S. Portnoyb, PhD, Biomedical Engineering, portnoys@tauex.tau.ac.il A. Jaffec, M.D, PhD, Endocrinologist, jaffe@hy.health.gov.il B. Z. Dekela, PhD, Electrical Engineering, benziond@ruppin.ac.il a Ruppin Academic Center, Emek-Hefer, 40250, Israel b Occupation Therapy Department, Tel-Aviv University, Tel-Aviv, Israel c Endocrinology and Diabetes Unit, Hillel Yaffe Medical Center, Hadera, Israel

Purpose: The aim of the present study was to develop a simple and accurate way to measure vitamin D levels. Vitamin D nowadays is measured by a variety of methods which their common drawbacks are expensive equipment and the need for high trained technical staff. In this research we measured vitamin D levels by means of Fourier transform infra red method in conjugation with the evanescent wave spectroscopy technique, in order to develop a simpler vitamin D measurement method.

Methods: Blood samples were collected from patients with vitamin D deficiency at five intervals before and up to 16 days after they took a dose of 200,000 IU vitamin D3. Samples were measured by the conventional bio-chemical method and by the evanescent wave spectroscopy means.

Results: Correlation was found between the vitamin D levels measured by the traditional method and by the evanescent wave spectroscopy technique. The absorption lines occurred prominently in the IR spectral regions of the Amide I (≈1650 cm−1),Amide II (≈1530 cm−1) and the (≈3400 cm−1) absorption band which is attributed to the hydroxyl group indicated by the O-H stretch. In addition, the examination of the blood samples using the evanescent wave spectroscopy with clustering techniques facilitated the discrimination between vitamin D deficiency and normal vitamin D levels.

Practical relevance: This study demonstrates the potential of using the Fourier transform infra red method in conjugation with the evanescent wave spectroscopy technique coupled with multivariate analysis as a non- expensive, rapid and accurate alternative to the routine methodologies.

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