{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T18:46:41Z","timestamp":1782499601355,"version":"3.54.5"},"reference-count":31,"publisher":"Oxford University Press (OUP)","issue":"6","license":[{"start":{"date-parts":[[2026,6,1]],"date-time":"2026-06-01T00:00:00Z","timestamp":1780272000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,6,4]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Interpretation of ethanol results in postmortem blood samples has well-known limitations. After death, ethanol can form in the blood if sufficient glucose and microorganisms are present to facilitate the fermentation process. The potential for postmortem formation of ethanol has led to the widespread practice of verifying blood ethanol concentrations in a secondary matrix, typically vitreous humor when available. This study examined underlying trends and causes of postmortem ethanol formation in vitreous humor. Postmortem casework from 1 January 2022 to 31 December 2024 was investigated for cases where ethanol was reported in vitreous humor but not detected in a paired blood sample. Volatile analysis was performed by headspace gas chromatography on dual columns with flame ionization detectors. Ethanol, methanol, isopropanol, and acetone were screened in both blood and vitreous humor at reporting limits of 10, 10, 5.0, and 5.0\u2009mg\/dL, respectively. During this timeframe, 858 cases were identified with vitreous humor ethanol concentrations ranging from 10 to 624\u2009mg\/dL (mean 49\u2009mg\/dL, median 20\u2009mg\/dL). Of those identified, 683 cases (79%) had low-range vitreous ethanol concentrations (10\u201349\u2009mg\/dL). Possible biomarkers of ketoacidosis were also assessed in the 858 cases, with 464 cases (54%) reporting positive acetone and\/or isopropanol. Additionally, elevated levels of beta-hydroxybutyric acid (BHB) (\u2265 250\u2009\u00b5g\/mL) in either the blood or vitreous humor, were detected in 92% of cases (n\u2009=\u2009140) tested for BHB; elevated levels of glucose (\u2265 200\u2009mg\/dL) in vitreous humor were detected in 37% of cases (n\u2009=\u2009458) tested for glucose. The results of this study highlight the importance of testing multiple matrices for ethanol in postmortem casework and the potential for postmortem ethanol formation in unpreserved specimens.<\/jats:p>","DOI":"10.1093\/jat\/bkag044","type":"journal-article","created":{"date-parts":[[2026,6,13]],"date-time":"2026-06-13T03:12:38Z","timestamp":1781320358000},"source":"Crossref","is-referenced-by-count":0,"title":["Potential for postmortem formation of ethanol in vitreous humor"],"prefix":"10.1093","volume":"50","author":[{"ORCID":"https:\/\/orcid.org\/0009-0001-5572-7544","authenticated-orcid":false,"given":"Brianna L","family":"Peterson","sequence":"first","affiliation":[{"name":"NMS Labs , Horsham, PA 19044,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5921-0385","authenticated-orcid":false,"given":"Kari M","family":"Midthun","sequence":"additional","affiliation":[{"name":"NMS Labs , Horsham, PA 19044,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6393-8173","authenticated-orcid":false,"given":"Laura M","family":"Labay","sequence":"additional","affiliation":[{"name":"NMS Labs , Horsham, PA 19044,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2026,6,12]]},"reference":[{"key":"2026062613520937500_bkag044-B1","doi-asserted-by":"publisher","first-page":"9","DOI":"10.1093\/jat\/bkad078","article-title":"Preanalytical factors influencing the results of ethanol analysis in postmortem specimens","volume":"48","author":"Olds","year":"2024","journal-title":"J Anal Toxicol"},{"key":"2026062613520937500_bkag044-B2","doi-asserted-by":"publisher","first-page":"2081","DOI":"10.1007\/s00414-020-02415-9","article-title":"Evaluation and review of ways to differentiate sources of ethanol in postmortem blood","volume":"134","author":"Lin","year":"2020","journal-title":"Int J Legal Med"},{"key":"2026062613520937500_bkag044-B3","doi-asserted-by":"publisher","first-page":"8","DOI":"10.1097\/00000433-199603000-00002","article-title":"Postmortem production of ethanol and factors that influence interpretation: a critical review","volume":"17","author":"O\u2019Neal","year":"1996","journal-title":"Am J Forensic Med Pathol"},{"key":"2026062613520937500_bkag044-B4","doi-asserted-by":"publisher","first-page":"700","DOI":"10.1093\/ajcp\/60.5.700","article-title":"The effect of microbial contamination of the blood sample on the determination of ethanol levels in serum","volume":"60","author":"Blume","year":"1973","journal-title":"Am J Clin Pathol"},{"key":"2026062613520937500_bkag044-B5","doi-asserted-by":"publisher","first-page":"305","DOI":"10.1093\/jat\/14.5.305","article-title":"Vitreous humor in the evaluation of postmortem blood ethanol concentrations","volume":"14","author":"Caplan","year":"1990","journal-title":"J Anal Toxicol"},{"key":"2026062613520937500_bkag044-B6","doi-asserted-by":"publisher","first-page":"365","DOI":"10.1093\/jat\/29.5.365","article-title":"Comparative alcohol concentrations in blood and vitreous fluid with illustrative case studies","volume":"29","author":"Honey","year":"2005","journal-title":"J Anal Toxicol"},{"key":"2026062613520937500_bkag044-B7","doi-asserted-by":"publisher","first-page":"765","DOI":"10.1007\/s00414-014-1031-z","article-title":"Assistance of ethyl glucuronide and ethyl sulfate in the interpretation of postmortem ethanol findings","volume":"128","author":"Krabseth","year":"2014","journal-title":"Int J Legal Med"},{"key":"2026062613520937500_bkag044-B8","doi-asserted-by":"publisher","first-page":"110567","DOI":"10.1016\/j.forsciint.2020.110567","article-title":"Ethyl glucuronide and ethanol concentrations in femoral blood, urine and vitreous humor from 117 autopsy cases","volume":"318","author":"Neumann","year":"2021","journal-title":"Forensic Sci Int"},{"key":"2026062613520937500_bkag044-B9","doi-asserted-by":"publisher","first-page":"63","DOI":"10.1016\/j.forsciint.2011.01.036","article-title":"Ethyl sulphate and ethyl glucuronide in vitreous humor as postmortem evidence marker for ethanol consumption prior to death","volume":"210","author":"Thierauf","year":"2011","journal-title":"Forensic Sci Int"},{"key":"2026062613520937500_bkag044-B10","doi-asserted-by":"publisher","first-page":"111152","DOI":"10.1016\/j.forsciint.2021.111152","article-title":"Frequency of postmortem ethanol formation in blood, urine and vitreous humor - 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