{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T12:12:30Z","timestamp":1792671150419,"version":"4.5.0"},"reference-count":191,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2025,10,3]],"date-time":"2025-10-03T00:00:00Z","timestamp":1759449600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004281","name":"National Science Centre","doi-asserted-by":"publisher","award":["no. 2023\/49\/B\/ST5\/03756"],"award-info":[{"award-number":["no. 2023\/49\/B\/ST5\/03756"]}],"id":[{"id":"10.13039\/501100004281","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100010609","name":"Gda\u0144sk Medical University","doi-asserted-by":"publisher","award":["no. ST-02-0087\/07\/508"],"award-info":[{"award-number":["no. ST-02-0087\/07\/508"]}],"id":[{"id":"10.13039\/501100010609","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100010609","name":"Gda\u0144sk Medical University","doi-asserted-by":"publisher","award":["01\u201365023; 664\/508\/61\/ 71\u20131414"],"award-info":[{"award-number":["01\u201365023; 664\/508\/61\/ 71\u20131414"]}],"id":[{"id":"10.13039\/501100010609","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["www.mdpi.com"],"crossmark-restriction":true},"short-container-title":["Biosensors"],"abstract":"<jats:p>Exhaled breath (EB) contains numerous volatile organic compounds (VOCs) that can reflect pathological metabolic processes, making breath analysis a promising non-invasive diagnostic approach. In particular, volatile aldehydes and ketones have been identified as disease biomarkers in EB. Gas sensors are expected to play a crucial role in the diagnosis of numerous diseases at an early stage. Among the various available approaches, sensors stand out as especially attractive tools for diagnosing diseases such as lung cancer (LC) and diabetes, due to their affordability and operational simplicity. There is an urgent need in the field of disease detection for the development of affordable, non-invasive, and user-friendly sensors capable of detecting various biomarkers. Devices of the new generation should also demonstrate high repeatability of measurements and extended operational stability of the employed sensors. Due to these demands, the past few years have seen significant advancements in the development and implementation of electronic noses (ENs), which are composed of an array of sensors for the determination of VOCs present in EB. To meet these requirements, the development and integration of advanced receptor coatings on sensor transducers is essential. These coatings include nanostructured materials, molecularly imprinted polymers, and bioreceptors, which collectively enhance selectivity, sensitivity, and operational stability. However, reliable biomarker detection in point-of-care (PoC) mode remains a significant challenge, constrained by several factors. This review provides a comprehensive and critical evaluation of recent studies demonstrating that the detection of VOCs using gas sensor platforms enables disease detection and can be implemented in PoC mode.<\/jats:p>","DOI":"10.3390\/bios15100668","type":"journal-article","created":{"date-parts":[[2025,10,3]],"date-time":"2025-10-03T11:53:37Z","timestamp":1759492417000},"page":"668","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Exhaled Aldehydes and Ketones as Biomarkers of Lung Cancer and Diabetes: Review of Sensor Technologies for Early Disease Diagnosis"],"prefix":"10.3390","volume":"15","author":[{"given":"Rafa\u0142","family":"Kiejzik","sequence":"first","affiliation":[{"name":"Department of Inorganic Chemistry, Faculty of Pharmacy, Medical University of Gda\u0144sk, Hallera, 107, 80-416 Gda\u0144sk, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4454-7246","authenticated-orcid":false,"given":"Tomasz","family":"Wasilewski","sequence":"additional","affiliation":[{"name":"Department of Inorganic Chemistry, Faculty of Pharmacy, Medical University of Gda\u0144sk, Hallera, 107, 80-416 Gda\u0144sk, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wojciech","family":"Kamysz","sequence":"additional","affiliation":[{"name":"Department of Inorganic Chemistry, Faculty of Pharmacy, Medical University of Gda\u0144sk, Hallera, 107, 80-416 Gda\u0144sk, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,10,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2000883","DOI":"10.1002\/admt.202000883","article-title":"Recent Advancements in Development of Wearable Gas Sensors","volume":"6","author":"Bag","year":"2021","journal-title":"Adv. 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