研究目的
To develop a smartphone-assisted microfluidic chemistry analyzer for the simultaneous analysis of diabetes- and hyperlipidemia-related indexes (GLU, TG, TC) using image-based colorimetric assays.
研究成果
The smartphone-assisted microfluidic chemistry analyzer successfully enabled the simultaneous, accurate, and reproducible detection of GLU, TG, and TC from serum samples. The system demonstrated excellent correlation and consistency with conventional automated chemistry analyzers, proving its feasibility for point-of-care testing of diabetes and hyperlipidemia.
研究不足
The manual operations of sample metering, premixing, and loading outside of the microchip could complicate the process and affect reproducibility. The system's sensitivity and accuracy are dependent on the thickness of the microfluidic chip and the uniformity of the colorimetric reactions.
1:Experimental Design and Method Selection:
A fan-shaped microfluidic chip was designed for the simultaneous analysis of GLU, TG, and TC. The color changes of enzymatic reactions were captured and analyzed using a smartphone-controlled analyzer with a LED light source and a CCD camera.
2:Sample Selection and Data Sources:
111 serum samples were collected from Beijing Hospital for comparative analysis with a conventional chemistry analyzer.
3:List of Experimental Equipment and Materials:
Microfluidic chip, smartphone-controlled analyzer, LED light source, CCD camera, reagents for GLU, TG, and TC detection.
4:Experimental Procedures and Operational Workflow:
Serum samples were mixed with a common dilution buffer, loaded into the microfluidic chip, and incubated. The color changes were captured and analyzed by the smartphone-assisted analyzer.
5:Data Analysis Methods:
The color characteristic values of the green channel of the captured images were extracted for quantitative analysis. Linear and quadratic regressions were used for establishing concentration-CCV relationships.
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