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To determine the glucose concentration (in mmol\/L), oral fluid, parotid saliva, and capillary and venous blood were collected in the morning on an empty stomach and 2 hours after meals. Results. The glucose level in the oral fluid on an empty stomach was 0.1 mmol\/l and 0.03 mmol\/l 2 hours after eating, which indicated a significant decrease in the indicator For the first time, the limits of glucose content in parotid saliva in healthy people were 0.02\u20140.3 mmol\/l. There were minimal differences between glucose levels in parotid saliva on an empty stomach and after meals (0.06 mmol\/l and 0.05 mmol\/l, respectively). In capillary and venous blood, the highest concentration of glucose is reached 2 hours after eating. Conclusion. The study showed that the glucose concentration in parotid saliva in a healthy group of people practically does not change before and after eating, unlike oral fluid. The study of glucose levels in saliva can serve as a clinically significant parameter for additional diagnosis of diseases, which confirms the prospects of this study.<\/jats:p>","DOI":"10.17116\/stomat202610502139","type":"journal-article","created":{"date-parts":[[2026,4,27]],"date-time":"2026-04-27T18:37:36Z","timestamp":1777315056000},"page":"39","source":"Crossref","is-referenced-by-count":0,"title":["Comparative assessment of glucose levels in oral fluid, parotid saliva and blood in a healthy group of individuals"],"prefix":"10.17116","volume":"105","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9448-9614","authenticated-orcid":false,"given":"F.F.","family":"Losev","sequence":"first","affiliation":[{"name":"Central Research Institute of Dentistry and Maxillofacial Surgery","place":["Moscow, Russia"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0562-5184","authenticated-orcid":false,"given":"A.A.","family":"Kulakov","sequence":"additional","affiliation":[{"name":"Central Research Institute of Dentistry and Maxillofacial Surgery","place":["Moscow, Russia"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-7784-2237","authenticated-orcid":false,"given":"O.S.","family":"Vladimirskaya","sequence":"additional","affiliation":[{"name":"Central Research Institute of Dentistry and Maxillofacial Surgery","place":["Moscow, Russia"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2236-9488","authenticated-orcid":false,"given":"E.S.","family":"Abramova","sequence":"additional","affiliation":[{"name":"Central Research Institute of Dentistry and Maxillofacial Surgery","place":["Moscow, Russia"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4242-7059","authenticated-orcid":false,"given":"E.I.","family":"Selifanova","sequence":"additional","affiliation":[{"name":"Central Research Institute of Dentistry and Maxillofacial Surgery","place":["Moscow, Russia"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-0447-4412","authenticated-orcid":false,"given":"A.E.","family":"Fomenkova","sequence":"additional","affiliation":[{"name":"Central Research Institute of Dentistry and Maxillofacial Surgery","place":["Moscow, Russia"]}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"6743","reference":[{"key":"key-10.17116\/stomat202610502139-1","unstructured":"Belskaya LV, Korshunov AS, Ivasenko PS. 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