{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,16]],"date-time":"2026-03-16T16:57:17Z","timestamp":1773680237519,"version":"3.50.1"},"reference-count":24,"publisher":"Oxford University Press (OUP)","issue":"2","license":[{"start":{"date-parts":[[2017,6,19]],"date-time":"2017-06-19T00:00:00Z","timestamp":1497830400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"funder":[{"name":"institution"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2018,2,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Logical Observation Identifiers Names and Codes (LOINC) is the most widely used controlled vocabulary to identify laboratory tests. A given laboratory test can often be reported in more than 1 unit of measure (eg, grams or moles), and LOINC defines unique codes for each unit. Consequently, an identical laboratory test performed by 2 different clinical laboratories may have different LOINC codes. The absence of unit conversions between compatible LOINC codes impedes data aggregation and analysis of laboratory results. To develop such conversions, a computational process was developed to review the LOINC standard for potential conversions, and multiple expert reviewers oversaw and finalized the conversion list. In all, 285 bidirectional conversions were identified, including conversions for routine clinical tests such as sodium, magnesium, and human immunodeficiency virus (HIV). Unit conversions were applied to the aggregation of laboratory test results to demonstrate their usefulness. Diverse informatics projects may benefit from the ability to interconvert compatible results.<\/jats:p>","DOI":"10.1093\/jamia\/ocx056","type":"journal-article","created":{"date-parts":[[2017,5,8]],"date-time":"2017-05-08T19:10:51Z","timestamp":1494270651000},"page":"192-196","source":"Crossref","is-referenced-by-count":17,"title":["Unit conversions between LOINC codes"],"prefix":"10.1093","volume":"25","author":[{"given":"Ronald G","family":"Hauser","sequence":"first","affiliation":[{"name":"Veterans Affairs Connecticut Healthcare, West Haven, CT, USA"},{"name":"Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Douglas B","family":"Quine","sequence":"additional","affiliation":[{"name":"Veterans Affairs Connecticut Healthcare, West Haven, CT, USA"},{"name":"Main Laboratory, Bridgeport Hospital, Bridgeport, CT, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alex","family":"Ryder","sequence":"additional","affiliation":[{"name":"Children\u2019s Foundation Research Institute, Le Bonheur Children\u2019s Hospital, Memphis, TN, USA"},{"name":"Department of Pediatrics and Department of Pathology, University of Tennessee Health Science Center, Memphis, TN, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sheldon","family":"Campbell","sequence":"additional","affiliation":[{"name":"Veterans Affairs Connecticut Healthcare, West Haven, CT, USA"},{"name":"Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2017,6,19]]},"reference":[{"key":"2020110612454414000_ocx056-B1","unstructured":"Cheung\n              H\n            , MulveyS. 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An expanded systematic review of laboratory clinical audits","volume":"141","author":"Hauser","year":"2014","journal-title":"Am J Clin Pathol."},{"key":"2020110612454414000_ocx056-B16","unstructured":"McDonald\n              C\n            , HuffS, DeckardJ, et al\n          Logical Observation Identifiers Names and Codes (LOINC\u00ae) Users\u2019 Guide. 2016. Preface Page 2 http:\/\/loinc.org\/downloads\/files\/LOINCManual.pdf. Accessed September 9, 2016."},{"issue":"2","key":"2020110612454414000_ocx056-B17","doi-asserted-by":"crossref","first-page":"105","DOI":"10.3414\/ME09-01-0072","article-title":"A characterization of local LOINC mapping for laboratory tests in three large institutions","volume":"50","author":"Lin","year":"2011","journal-title":"Methods Inform Med."},{"key":"2020110612454414000_ocx056-B18","unstructured":"Regenstrief Institute. Lithium [Moles\/volume] in Serum or Plasma. http:\/\/s.details.loinc.org\/LOINC\/14334-7.html?sections=Simple. 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