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Since the very beginning of the history of medicine, one of the most important assets for evaluating various human diseases has been the analysis of the conditions of the biofluids within the human body. Hence, extensive research on sensors intended to evaluate the flow of many of these fluids in different tissues and organs has been published and, indeed, continues to be published very frequently. The purpose of this review is to provide researchers interested in venturing into biofluid flow sensing with a concise description of the physiological characteristics of the most important body fluids that are likely to be altered by diverse medical conditions. Similarly, a reported compilation of well-established sensors and techniques currently applied in healthcare regarding flow sensing is aimed at serving as a starting point for understanding the theoretical principles involved in the existing methodologies, allowing researchers to determine the most suitable approach to adopt according to their own objectives in this broad field.<\/jats:p>","DOI":"10.3390\/s22186836","type":"journal-article","created":{"date-parts":[[2022,9,13]],"date-time":"2022-09-13T04:05:41Z","timestamp":1663041941000},"page":"6836","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Overview of Biofluids and Flow Sensing Techniques Applied in Clinical Practice"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4216-3794","authenticated-orcid":false,"given":"Carlos","family":"Y\u00e1\u00f1ez","sequence":"first","affiliation":[{"name":"Centre for Sensors, Instruments and Systems Development, Universitat Polit\u00e8cnica de Catalunya, 08222 Terrassa, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1160-3080","authenticated-orcid":false,"given":"Gerard","family":"DeMas-Gim\u00e9nez","sequence":"additional","affiliation":[{"name":"Centre for Sensors, Instruments and Systems Development, Universitat Polit\u00e8cnica de Catalunya, 08222 Terrassa, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0136-8301","authenticated-orcid":false,"given":"Santiago","family":"Royo","sequence":"additional","affiliation":[{"name":"Centre for Sensors, Instruments and Systems Development, Universitat Polit\u00e8cnica de Catalunya, 08222 Terrassa, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,9,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"446","DOI":"10.1007\/s00216-003-1947-5","article-title":"Current Research Activity in Biosensors","volume":"377","author":"Nakamura","year":"2003","journal-title":"Anal. 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