A simple and smart telemedicine device for developing regions: a pocket-sized colorimetric reader.
We have proposed a novel mobile healthcare platform, combining a pocket-sized colorimetric reader (13.5 × 6.5 × 2.5 cm(3)) and commercially available 10-parameter urinalysis paper strips (glucose, protein, glucose, bilirubin, urobilinogen, ketones, nitrite, pH, specific gravity, erythrocytes, and leukocytes), capable of sending data with a smart phone. The reader includes a novel colorimetric multi-detection module, which consists of three-chromatic light-emitting diodes, silicon photodiodes and a novel poly(methylmethacrylate) (PMMA) optical splitter. We employed data reading methods using conversions of the signal data (red, blue, and green) to the hue (H) color map or the Y model data, and used a curve-fitting method for the quantification. The reader is battery-powered, inexpensive, light-weight, and very speedy in analysis. And, it was applied to detection of a thousand of human urine samples and demonstrated reliable quantification of urinary glucose and protein. The features can be used by unskilled people on-site to transfer the analyzed data to experts off-site.
BT Convergence Division, Electronics and Telecommunications Research Institute, Korea. dslee@etri.re.kr
Dae-Sik
DS
Lee
Byoung Goo
BG
Jeon
Chunhwa
C
Ihm
Je-Kyun
JK
Park
Mun Yeon
MY
Jung
D003124:Colorimetry / Q000191:economics / Q000295:instrumentation; D004867:Equipment Design; D006801:Humans; D017216:Telemedicine / Q000191:economics / Q000295:instrumentation*; D016482:Urinalysis / Q000191:economics / Q000295:instrumentation*