{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,7]],"date-time":"2026-05-07T05:11:37Z","timestamp":1778130697229,"version":"3.51.4"},"reference-count":29,"publisher":"SAGE Publications","issue":"3","license":[{"start":{"date-parts":[[2025,9,26]],"date-time":"2025-09-26T00:00:00Z","timestamp":1758844800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Ann Clin Biochem"],"published-print":{"date-parts":[[2026,5]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Zinc deficiency is a global concern, particularly in low-income countries, but also among vulnerable groups in Western countries, such as children. Diagnosing mild or moderate zinc deficiency is however challenging because of nonspecific symptoms and due to circulating zinc showing only subtle changes, requiring high accuracy in measurement. Challenges to accurate measurement include variations from choice of analytical instrument, analysis performance, and preanalytical factors such as choice of sample matrices and delayed blood sample processing. This study aimed to examine the stability of zinc in plasma and serum, measured by the recommended inductively coupled plasma optical emission spectrometry (ICP-OES) method and a direct colourimetric assay on the fully automated Roche Cobas c702 analyzer.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A total of 245 whole blood samples were stored at room temperature for 0\u20138\u00a0h after blood sampling, then centrifuged for 10\u00a0min at 2000 g (serum) or 5\u00a0min at 2650 g (plasma), frozen at \u221220\u00b0C, and analysed, respectively, on ICP-OES and Cobas, the latter with the colourimetric kit from Sentinel diagnostics.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Serum zinc concentrations measured on Cobas and ICP-OES showed no statistically significant change up to 6\u00a0h and never exceeded acceptable limits. Plasma zinc concentrations increased steadily over time, exceeding acceptable limits after 6\u00a0h. There were statistically significant differences between zinc measurements on ICP-OES and Cobas in both serum and plasma.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Zinc is stable for at least 8\u00a0h in serum and up to 6\u00a0h in plasma when measured by either Sentinel diagnostic colourimetric method on Cobas or ICP-OES.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/00045632251383404","type":"journal-article","created":{"date-parts":[[2025,9,16]],"date-time":"2025-09-16T06:36:35Z","timestamp":1758004595000},"page":"250-257","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Preanalytical stability of zinc in whole blood serum and plasma tubes as measured by ICP-OES and colourimetry"],"prefix":"10.1177","volume":"63","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-7964-1060","authenticated-orcid":false,"given":"Kristian Voss","family":"Bjerre","sequence":"first","affiliation":[{"name":"Department of Clinical Biochemistry, Odense University Hospital, Odense, Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6698-9948","authenticated-orcid":false,"given":"Helle Glud","family":"Binderup","sequence":"additional","affiliation":[{"name":"Odense University Hospital"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3029-2855","authenticated-orcid":false,"given":"Mads","family":"Nybo","sequence":"additional","affiliation":[{"name":"Department of Clinical Biochemistry, Odense University Hospital, Odense, Denmark"},{"name":"Odense University Hospital"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9982-1236","authenticated-orcid":false,"given":"Louise Helskov","family":"J\u00f8rgensen","sequence":"additional","affiliation":[{"name":"Department of Clinical Biochemistry, Odense University Hospital, Odense, Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2025,9,26]]},"reference":[{"key":"e_1_3_5_2_2","doi-asserted-by":"publisher","DOI":"10.1002\/jcla.22169"},{"key":"e_1_3_5_3_2","doi-asserted-by":"publisher","DOI":"10.3945\/jn.115.220079"},{"key":"e_1_3_5_4_2","doi-asserted-by":"publisher","DOI":"10.3945\/ajcn.110.005744"},{"key":"e_1_3_5_5_2","doi-asserted-by":"publisher","DOI":"10.3390\/nu13113713"},{"key":"e_1_3_5_6_2","doi-asserted-by":"publisher","DOI":"10.1007\/978-1-4471-3879-2_20"},{"key":"e_1_3_5_7_2","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0286073"},{"key":"e_1_3_5_8_2","doi-asserted-by":"publisher","DOI":"10.1007\/s12011-021-02883-z"},{"key":"e_1_3_5_9_2","doi-asserted-by":"publisher","DOI":"10.1093\/ajcn\/74.1.116"},{"key":"e_1_3_5_10_2","doi-asserted-by":"publisher","DOI":"10.1177\/00045632231208337"},{"key":"e_1_3_5_11_2","doi-asserted-by":"publisher","DOI":"10.1093\/clinchem\/27.3.493"},{"key":"e_1_3_5_12_2","unstructured":"Komiteloven. 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