{"id":16736,"date":"2025-12-15T19:16:56","date_gmt":"2025-12-15T19:16:56","guid":{"rendered":"https:\/\/each.ut.ee\/EACH\/?p=16736"},"modified":"2026-02-18T18:50:28","modified_gmt":"2026-02-18T18:50:28","slug":"our-lc-ms-validation-activities-at-the-iupac-dsm-lc-ms-validation-workshop","status":"publish","type":"post","link":"http:\/\/each.ut.ee\/EACH\/our-lc-ms-validation-activities-at-the-iupac-dsm-lc-ms-validation-workshop\/","title":{"rendered":"Our LC-MS validation activities at the IUPAC-DSM LC-MS validation workshop"},"content":{"rendered":"\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69e7811cd12fb&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"69e7811cd12fb\" class=\"wp-block-image alignright size-full is-resized wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"321\" height=\"283\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/IUPAC_SCI_logos.jpg\" alt=\"\" class=\"wp-image-16737\" style=\"aspect-ratio:1.1342956331079848;width:162px;height:auto\" srcset=\"http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/IUPAC_SCI_logos.jpg 321w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/IUPAC_SCI_logos-300x264.jpg 300w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/IUPAC_SCI_logos-150x132.jpg 150w\" sizes=\"auto, (max-width: 321px) 100vw, 321px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"Enlarge\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n\n\n\n<p><strong>Riin Rebane, Asko Laaniste and Ivo Leito from the University of Tartu participated on 10-11.12.2025 in the Joint <a href=\"https:\/\/iupac.org\/event\/workshop-on-lc-ms-method-validation-and-performance\/\">IUPAC-DSM Workshop on LC-MS method validation and performance<\/a>, organised jointly by the IUPAC\u2019s Division of Analytical Chemistry and the Mass spectrometry division (DSM) of the Italian Chemical Society.<\/strong><\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69e7811cd1875&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"69e7811cd1875\" class=\"wp-block-image alignleft size-large is-resized wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"1010\" height=\"1024\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Riin_Rebane_presenting_2025-12-11-1010x1024.jpg\" alt=\"\" class=\"wp-image-16738\" style=\"aspect-ratio:0.9863364316917806;width:302px;height:auto\" srcset=\"http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Riin_Rebane_presenting_2025-12-11-1010x1024.jpg 1010w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Riin_Rebane_presenting_2025-12-11-296x300.jpg 296w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Riin_Rebane_presenting_2025-12-11-148x150.jpg 148w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Riin_Rebane_presenting_2025-12-11-768x779.jpg 768w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Riin_Rebane_presenting_2025-12-11-1514x1536.jpg 1514w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Riin_Rebane_presenting_2025-12-11-2019x2048.jpg 2019w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Riin_Rebane_presenting_2025-12-11-50x50.jpg 50w\" sizes=\"auto, (max-width: 1010px) 100vw, 1010px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"Enlarge\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><figcaption class=\"wp-element-caption\">Riin presenting<\/figcaption><\/figure>\n\n\n\n<p>Riin presented the opening keynote of the event titled \u201c<a href=\"https:\/\/analytical.chem.ut.ee\/wp-content\/uploads\/2025\/12\/Rome_2025_ettekanne_Riin_pdf.pdf\">Principles of method validation<\/a>\u201d. Her presentation reframed LC-MS method validation as a risk-management process rather than a checklist of validation characteristics. By zooming out to the method\u2019s intended purpose, each validation characteristic is linked to the specific risks it is designed to control. This view allows to build evidence that the method performs reliably under real-world conditions and is truly fit for purpose and produces results with known confidence.<\/p>\n\n\n\n<figure class=\"wp-block-image alignright size-large is-resized\"><a href=\"https:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Leito_LC-MS_V_MOOC_IUPAC-DSM_2025.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Leito_LC-MS_V_MOOC_IUPAC-DSM_2025-1024x576.png\" alt=\"\" class=\"wp-image-16739\" style=\"aspect-ratio:1.7777662157474852;width:404px;height:auto\" srcset=\"http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Leito_LC-MS_V_MOOC_IUPAC-DSM_2025-1024x576.png 1024w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Leito_LC-MS_V_MOOC_IUPAC-DSM_2025-300x169.png 300w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Leito_LC-MS_V_MOOC_IUPAC-DSM_2025-150x84.png 150w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Leito_LC-MS_V_MOOC_IUPAC-DSM_2025-768x432.png 768w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Leito_LC-MS_V_MOOC_IUPAC-DSM_2025.png 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p>Ivo\u2019s talk \u201c<a href=\"https:\/\/analytical.chem.ut.ee\/wp-content\/uploads\/2025\/12\/Leito_LC-MS_V_MOOC_IUPAC-DSM_2025.pdf\">What are the issues encountered in the real world? Lessons learned form an online validation course<\/a>\u201d presented an analysis of the main issues brought up by the participants of the nine editions of an online LC-MS method validation course (<a href=\"https:\/\/sisu.ut.ee\/lcms_method_validation\/\">https:\/\/sisu.ut.ee\/lcms_method_validation\/<\/a>). The analysis of 2640 course forum posts and 336 participant feedback submissions revealed that practitioners struggle a lot with calculations and spreadsheet software, which diverts effort from real \u201canalytical hemistry\u201d issues. &nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><a href=\"https:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/ValChrom_session_2025-scaled.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/ValChrom_session_2025-1024x576.jpg\" alt=\"\" class=\"wp-image-16740\" style=\"width:532px;height:auto\" srcset=\"http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/ValChrom_session_2025-1024x576.jpg 1024w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/ValChrom_session_2025-300x169.jpg 300w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/ValChrom_session_2025-150x84.jpg 150w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/ValChrom_session_2025-768x432.jpg 768w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/ValChrom_session_2025-1536x864.jpg 1536w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/ValChrom_session_2025-2048x1152.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Asko leading the ValChrom session<\/figcaption><\/figure>\n\n\n\n<p>Asko&#8217;s session \u201c<a href=\"https:\/\/analytical.chem.ut.ee\/wp-content\/uploads\/2025\/12\/ValChrom_Laaniste_2025-1.pdf\">ValChrom open-access online validation software<\/a>\u201d was a workshop in the true sense of the word: a hands-on session on the online validation software <a href=\"https:\/\/valchrom.ut.ee\/\">ValChrom<\/a> developed at UT. Participants had instant access to the software freely available in web and demo materials. Asko walked them through the whole process of ValChrom from start to finish, from defining analytes to customizing experimental plan with AI and finishing with automatically generated DOCX file with the whole validation data in it. ValChrom&#8217;s Design of Experiements (DoE) capabilities were also covered and it was nice to see that throughout the two days a big number of presentations also involved DoE one way or another, indicating a rising need for such tools.<\/p>\n\n\n\n<p>All in all, the contributions of our team were highly appreciated, indicated by numerous questions, both during sessions and (especially) during coffee breaks.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><a href=\"https:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Leito_LC-MS_V_MOOC_IUPAC-DSM_2025_thank-you.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Leito_LC-MS_V_MOOC_IUPAC-DSM_2025_thank-you-1024x576.jpg\" alt=\"\" class=\"wp-image-16741\" style=\"width:624px;height:auto\" srcset=\"http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Leito_LC-MS_V_MOOC_IUPAC-DSM_2025_thank-you-1024x576.jpg 1024w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Leito_LC-MS_V_MOOC_IUPAC-DSM_2025_thank-you-300x169.jpg 300w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Leito_LC-MS_V_MOOC_IUPAC-DSM_2025_thank-you-150x84.jpg 150w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Leito_LC-MS_V_MOOC_IUPAC-DSM_2025_thank-you-768x432.jpg 768w, http:\/\/each.ut.ee\/EACH\/wp-content\/uploads\/2025\/12\/Leito_LC-MS_V_MOOC_IUPAC-DSM_2025_thank-you.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Riin Rebane, Asko Laaniste and Ivo Leito from the University of Tartu participated on 10-11.12.2025 in the Joint IUPAC-DSM Workshop on LC-MS method validation and performance, organised jointly by the IUPAC\u2019s Division of Analytical Chemistry and the Mass spectrometry division (DSM) of the Italian Chemical Society. Riin presented the opening keynote of the event titled [&hellip;]<\/p>\n","protected":false},"author":23,"featured_media":16737,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-16736","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"blocksy_meta":[],"_links":{"self":[{"href":"http:\/\/each.ut.ee\/EACH\/wp-json\/wp\/v2\/posts\/16736","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/each.ut.ee\/EACH\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/each.ut.ee\/EACH\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/each.ut.ee\/EACH\/wp-json\/wp\/v2\/users\/23"}],"replies":[{"embeddable":true,"href":"http:\/\/each.ut.ee\/EACH\/wp-json\/wp\/v2\/comments?post=16736"}],"version-history":[{"count":5,"href":"http:\/\/each.ut.ee\/EACH\/wp-json\/wp\/v2\/posts\/16736\/revisions"}],"predecessor-version":[{"id":16853,"href":"http:\/\/each.ut.ee\/EACH\/wp-json\/wp\/v2\/posts\/16736\/revisions\/16853"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/each.ut.ee\/EACH\/wp-json\/wp\/v2\/media\/16737"}],"wp:attachment":[{"href":"http:\/\/each.ut.ee\/EACH\/wp-json\/wp\/v2\/media?parent=16736"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/each.ut.ee\/EACH\/wp-json\/wp\/v2\/categories?post=16736"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/each.ut.ee\/EACH\/wp-json\/wp\/v2\/tags?post=16736"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}