Sickle cell detection using a smartphone
Name
Knowlton_Sickle cell detection.pdf
Size
1.28 MB
Format
Adobe PDF
Checksum (MD5)
f772fa558d35733342dbab00733bd7ad
Author(s)
Knowlton, S. M.
Sencan, I.
Khoory, J.
Heeney, M. M.
Ghiran, I. C.
Tasoglu, S.
Aytar, Yusuf
Date Issued
October 2015
Journal
Scientific Reports
Publisher
Nature Publishing Group
Citation
Knowlton, S. M., I. Sencan, Y. Aytar, J. Khoory, M. M. Heeney, I. C. Ghiran, and S. Tasoglu. “Sickle Cell Detection Using a Smartphone.” Scientific Reports 5 (October 22, 2015): 15022.
Version
Final published version
Abstract
Sickle cell disease affects 25% of people living in Central and West Africa and, if left undiagnosed, can cause life threatening “silent” strokes and lifelong damage. However, ubiquitous testing procedures have yet to be implemented in these areas, necessitating a simple, rapid, and accurate testing platform to diagnose sickle cell disease. Here, we present a label-free, sensitive, and specific testing platform using only a small blood sample (<1 μl) based on the higher density of sickle red blood cells under deoxygenated conditions. Testing is performed with a lightweight and compact 3D-printed attachment installed on a commercial smartphone. This attachment includes an LED to illuminate the sample, an optical lens to magnify the image, and two permanent magnets for magnetic levitation of red blood cells. The sample is suspended in a paramagnetic medium with sodium metabisulfite and loaded in a microcapillary tube that is inserted between the magnets. Red blood cells are levitated in the magnetic field based on equilibrium between the magnetic and buoyancy forces acting on the cells. Using this approach, we were able to distinguish between the levitation patterns of sickle versus control red blood cells based on their degree of confinement.
MIT Department
Massachusetts Institute of Technology. Computer Science and Artificial Intelligence Laboratory
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1038/srep15022
