{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,17]],"date-time":"2026-04-17T18:25:26Z","timestamp":1776450326792,"version":"3.51.2"},"reference-count":17,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2015,11,14]],"date-time":"2015-11-14T00:00:00Z","timestamp":1447459200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2015,9,1]],"date-time":"2015-09-01T00:00:00Z","timestamp":1441065600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"name":"NHLS Research Trust","award":["KNC-107"],"award-info":[{"award-number":["KNC-107"]}]}],"content-domain":{"domain":["wiley.com"],"crossmark-restriction":true},"short-container-title":["Int J Lab Hematology"],"published-print":{"date-parts":[[2016,4]]},"abstract":"<jats:title>Summary<\/jats:title><jats:sec><jats:title>Introduction<\/jats:title><jats:p>Physiological changes during pregnancy affect routine tests for iron deficiency. The reticulocyte haemoglobin equivalent (<jats:styled-content style=\"fixed-case\">RET<\/jats:styled-content>\u2010He) and serum\u2010soluble transferrin receptor (<jats:styled-content style=\"fixed-case\">sTfR<\/jats:styled-content>) assay are newer diagnostic parameters for the detection of iron deficiency, combined in the Thomas diagnostic plot. We used this plot to determine the iron status of pregnant women presenting for their first visit to an antenatal clinic in Bloemfontein, South Africa.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Routine laboratory tests (serum ferritin, full blood count and C\u2010reactive protein) and <jats:styled-content style=\"fixed-case\">RET<\/jats:styled-content>\u2010He and <jats:styled-content style=\"fixed-case\">sTfR<\/jats:styled-content> were performed. The iron status was determined using the Thomas plot.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>For this study, 103 pregnant women were recruited. According to the Thomas plot, 72.8% of the participants had normal iron stores and erythropoiesis. Iron\u2010deficient erythropoiesis was detected in 12.6%. A third of participants were anaemic. Serum ferritin showed excellent sensitivity but poor specificity for detecting depleted iron stores. <jats:styled-content style=\"fixed-case\">HIV<\/jats:styled-content> status had no influence on the iron status of the participants.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Our findings reiterate that causes other than iron deficiency should be considered in anaemic individuals. When compared with the Thomas plot, a low serum ferritin is a sensitive but nonspecific indicator of iron deficiency. The Thomas plot may provide useful information to identify pregnant individuals in whom haematologic parameters indicate limited iron availability for erythropoiesis.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ijlh.12448","type":"journal-article","created":{"date-parts":[[2015,11,14]],"date-time":"2015-11-14T08:44:45Z","timestamp":1447490685000},"page":"119-124","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Iron status determination in pregnancy using the Thomas plot"],"prefix":"10.1111","volume":"38","author":[{"given":"R.","family":"Weyers","sequence":"first","affiliation":[{"name":"Department of Haematology and Cell Biology Faculty of Health Sciences University of the Free State and National Health Laboratory Service (NHLS) Bloemfontein South Africa"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M. J.","family":"Coetzee","sequence":"additional","affiliation":[{"name":"Department of Haematology and Cell Biology Faculty of Health Sciences University of the Free State and National Health Laboratory Service (NHLS) Bloemfontein South Africa"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M.","family":"Nel","sequence":"additional","affiliation":[{"name":"Department of Biostatistics Faculty of Health Sciences University of the Free State Bloemfontein South Africa"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2015,11,14]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.f3443"},{"key":"e_1_2_8_3_1","first-page":"741","article-title":"The South African Comparative Risk Assessment Collaborating Group. 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