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Paper-based analytical devices are fluidic chips fabricated with extremely inexpensive materials, namely paper, thereby allowing their use as a zero-cost analytical device in third-world countries that lack access to expensive diagnostic infrastructures. The aim of this review is to discuss: (1) microfluidic paper-based analytical devices (µPADs) for quantitative analysis, (2) fabrication of two- or three-dimensional µPADs, (3) analytical methods of µPADs, and (4) our opinions regarding the future applications of µPADs for quantitative urinalysis.
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Jeong et al. (2013) studied this question.
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