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Proceedings Paper

Smart fast blood counting of trace volumes of body fluids from various mammalian species using a compact custom-built microscope cytometer (Conference Presentation)
Author(s): Zachary J. Smith; Tingjuan Gao; Tzu-Yin Lin; Danielle Carrade-Holt; Stephen M. Lane; Dennis L. Matthews; Denis M. Dwyre; Sebastian Wachsmann-Hogiu
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Paper Abstract

Cell counting in human body fluids such as blood, urine, and CSF is a critical step in the diagnostic process for many diseases. Current automated methods for cell counting are based on flow cytometry systems. However, these automated methods are bulky, costly, require significant user expertise, and are not well suited to counting cells in fluids other than blood. Therefore, their use is limited to large central laboratories that process enough volume of blood to recoup the significant capital investment these instruments require. We present in this talk a combination of a (1) low-cost microscope system, (2) simple sample preparation method, and (3) fully automated analysis designed for providing cell counts in blood and body fluids. We show results on both humans and companion and farm animals, showing that accurate red cell, white cell, and platelet counts, as well as hemoglobin concentration, can be accurately obtained in blood, as well as a 3-part white cell differential in human samples. We can also accurately count red and white cells in body fluids with a limit of detection ~3 orders of magnitude smaller than current automated instruments. This method uses less than 1 microliter of blood, and less than 5 microliters of body fluids to make its measurements, making it highly compatible with finger-stick style collections, as well as appropriate for small animals such as laboratory mice where larger volume blood collections are dangerous to the animal’s health.

Paper Details

Date Published: 27 April 2016
PDF: 1 pages
Proc. SPIE 9715, Optical Diagnostics and Sensing XVI: Toward Point-of-Care Diagnostics, 97150J (27 April 2016); doi: 10.1117/12.2212881
Show Author Affiliations
Zachary J. Smith, UC Davis Medical Ctr. (United States)
Tingjuan Gao, UC Davis Medical Ctr. (United States)
Tzu-Yin Lin, UC Davis Medical Ctr. (United States)
Danielle Carrade-Holt, William R. Pritchard Veterinary Medical Teaching Hospital, UC Davis Veterinary Medicine (United States)
Stephen M. Lane, UC Davis Medical Ctr. (United States)
Dennis L. Matthews, UC Davis Medical Ctr. (United States)
Denis M. Dwyre, Univ. of California, Davis (United States)
Sebastian Wachsmann-Hogiu, NSF Ctr. for Biophotonics Science and Technology, UC Davis Medical Ctr. (United States)

Published in SPIE Proceedings Vol. 9715:
Optical Diagnostics and Sensing XVI: Toward Point-of-Care Diagnostics
Gerard L. Coté, Editor(s)

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