{"id":4172,"date":"2026-07-03T18:11:40","date_gmt":"2026-07-03T18:11:40","guid":{"rendered":"https:\/\/aestx-systems.com\/coa\/"},"modified":"2026-07-23T09:32:37","modified_gmt":"2026-07-23T09:32:37","slug":"coa","status":"publish","type":"page","link":"https:\/\/aestx-systems.com\/en\/coa\/","title":{"rendered":"Lab analyses &amp; COAs"},"content":{"rendered":"<div class=\"ax-coa-wrap\">\r\n\t\t<div class=\"ax-coa-intro\">\r\n\t\t\t<p>Every batch is tested by <strong>Janoshik Analytical<\/strong> \u2014 one of the industry\u2019s leading independent analytical laboratories \u2014 for purity, endotoxins and heavy metals. All original reports can be viewed and verified directly with Janoshik.<\/p>\r\n\t\t<\/div>\r\n\r\n\t\t\t\t\t\t\t\t\t<div class=\"ax-coa-group\">\r\n\t\t\t\t\t<div class=\"ax-coa-phead\"><img decoding=\"async\" class=\"ax-coa-pimg\" src=\"https:\/\/aestx-systems.com\/wp-content\/uploads\/2026\/04\/Edited-50-mg-AESTXSystems-1-150x150.webp\" alt=\"GHK-Cu\" loading=\"lazy\"><h2 class=\"ax-coa-product\">GHK-Cu<\/h2><\/div>\r\n\t\t\t\t\t<div class=\"ax-coa-grid\">\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"ax-coa-card\">\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-icon\">\ud83e\uddea<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-type\">Purity (HPLC)<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-product\">GHK-Cu<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-badge\">\u2713 Passed<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-actions\">\r\n\t\t\t\t\t\t\t\t\t<a href=\"#\" class=\"ax-coa-view\" data-img=\"https:\/\/aestx-systems.com\/wp-content\/uploads\/2026\/07\/coa-ghkcu-purity-133328.png\" data-title=\"GHK-Cu \u00b7 Reinheit (HPLC)\" data-verify=\"https:\/\/janoshik.com\/tests\/133328-GHKCu_50mg_34XP5L6UDL99\">View report<\/a>\r\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/janoshik.com\/tests\/133328-GHKCu_50mg_34XP5L6UDL99\" class=\"ax-coa-verify\" target=\"_blank\" rel=\"noopener\">Verify \u2192<\/a>\r\n\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-id\">Test #133328<\/div>\r\n\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"ax-coa-card\">\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-icon\">\ud83d\udee1\ufe0f<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-type\">Endotoxins (LAL)<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-product\">GHK-Cu<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-badge\">\u2713 Passed<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-actions\">\r\n\t\t\t\t\t\t\t\t\t<a href=\"#\" class=\"ax-coa-view\" data-img=\"https:\/\/aestx-systems.com\/wp-content\/uploads\/2026\/07\/coa-ghkcu-endotoxine-133329.png\" data-title=\"GHK-Cu \u00b7 Endotoxine (LAL)\" data-verify=\"https:\/\/janoshik.com\/tests\/133329-GHKCu_50mg_CHMND9K3IGFY\">View report<\/a>\r\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/janoshik.com\/tests\/133329-GHKCu_50mg_CHMND9K3IGFY\" class=\"ax-coa-verify\" target=\"_blank\" rel=\"noopener\">Verify \u2192<\/a>\r\n\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-id\">Test #133329<\/div>\r\n\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"ax-coa-card\">\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-icon\">\u2697\ufe0f<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-type\">Heavy metals<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-product\">GHK-Cu<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-badge\">\u2713 Passed<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-actions\">\r\n\t\t\t\t\t\t\t\t\t<a href=\"#\" class=\"ax-coa-view\" data-img=\"https:\/\/aestx-systems.com\/wp-content\/uploads\/2026\/07\/coa-ghkcu-heavymetals-133330.png\" data-title=\"GHK-Cu \u00b7 Schwermetalle\" data-verify=\"https:\/\/janoshik.com\/tests\/133330-GHKCu_50mg_FVWXBQ411J3R\">View report<\/a>\r\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/janoshik.com\/tests\/133330-GHKCu_50mg_FVWXBQ411J3R\" class=\"ax-coa-verify\" target=\"_blank\" rel=\"noopener\">Verify \u2192<\/a>\r\n\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-id\">Test #133330<\/div>\r\n\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t<div class=\"ax-coa-group\">\r\n\t\t\t\t\t<div class=\"ax-coa-phead\"><img decoding=\"async\" class=\"ax-coa-pimg\" src=\"https:\/\/aestx-systems.com\/wp-content\/uploads\/2026\/04\/Tripple-G-GLP-III-10-mg-AESTXSystems-150x150.webp\" alt=\"Retatrutide\" loading=\"lazy\"><h2 class=\"ax-coa-product\">Retatrutide<\/h2><\/div>\r\n\t\t\t\t\t<div class=\"ax-coa-grid\">\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"ax-coa-card\">\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-icon\">\ud83e\uddea<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-type\">Purity (HPLC)<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-product\">Retatrutide<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-badge\">\u2713 Passed<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-actions\">\r\n\t\t\t\t\t\t\t\t\t<a href=\"#\" class=\"ax-coa-view\" data-img=\"https:\/\/aestx-systems.com\/wp-content\/uploads\/2026\/07\/coa-retatrutide-purity-133331.png\" data-title=\"Retatrutide \u00b7 Reinheit (HPLC)\" data-verify=\"https:\/\/janoshik.com\/tests\/133331-Retatrutide_GLPIII_3WZNYBZBESXS\">View report<\/a>\r\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/janoshik.com\/tests\/133331-Retatrutide_GLPIII_3WZNYBZBESXS\" class=\"ax-coa-verify\" target=\"_blank\" rel=\"noopener\">Verify \u2192<\/a>\r\n\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-id\">Test #133331<\/div>\r\n\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"ax-coa-card\">\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-icon\">\ud83d\udee1\ufe0f<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-type\">Endotoxins (LAL)<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-product\">Retatrutide<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-badge\">\u2713 Passed<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-actions\">\r\n\t\t\t\t\t\t\t\t\t<a href=\"#\" class=\"ax-coa-view\" data-img=\"https:\/\/aestx-systems.com\/wp-content\/uploads\/2026\/07\/coa-retatrutide-endotoxine-133332.png\" data-title=\"Retatrutide \u00b7 Endotoxine (LAL)\" data-verify=\"https:\/\/janoshik.com\/tests\/133332-Retatrutide_GLPIII_8V9UL47GYYZF\">View report<\/a>\r\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/janoshik.com\/tests\/133332-Retatrutide_GLPIII_8V9UL47GYYZF\" class=\"ax-coa-verify\" target=\"_blank\" rel=\"noopener\">Verify \u2192<\/a>\r\n\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-id\">Test #133332<\/div>\r\n\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"ax-coa-card\">\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-icon\">\u2697\ufe0f<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-type\">Heavy metals<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-product\">Retatrutide<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-badge\">\u2713 Passed<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-actions\">\r\n\t\t\t\t\t\t\t\t\t<a href=\"#\" class=\"ax-coa-view\" data-img=\"https:\/\/aestx-systems.com\/wp-content\/uploads\/2026\/07\/coa-retatrutide-heavymetals-133333.png\" data-title=\"Retatrutide \u00b7 Schwermetalle\" data-verify=\"https:\/\/janoshik.com\/tests\/133333-Retatrutide_GLPIII_4Q3NQQY835RP\">View report<\/a>\r\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/janoshik.com\/tests\/133333-Retatrutide_GLPIII_4Q3NQQY835RP\" class=\"ax-coa-verify\" target=\"_blank\" rel=\"noopener\">Verify \u2192<\/a>\r\n\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t<div class=\"ax-coa-card-id\">Test #133333<\/div>\r\n\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t<\/div>\r\n\t\t\t\t\t\r\n\t\t<div class=\"ax-coa-explain\">\r\n\t\t\t<h2 class=\"ax-coa-explain-h\">What do the results mean? A brief explanation.<\/h2>\r\n\t\t\t<p class=\"ax-coa-explain-lead\">A reputable peptide report tests <strong>three independent criteria<\/strong>. Important: HPLC may show a peptide to be <strong>99.9% pure<\/strong> and it may still contain endotoxins or heavy metals. Each criterion is therefore tested <strong>separately<\/strong> . Disclosing all three provides the complete picture.<\/p>\r\n\r\n\t\t\t<p class=\"ax-coa-transref\">Learn how we test each batch and how you can verify the reports yourself: <a href=\"https:\/\/aestx-systems.com\/en\/qualitaet-transparenz\/\">Quality &amp; transparency \u2192<\/a><\/p>\r\n\r\n\t\t\t<div class=\"ax-coa-explain-grid\">\r\n\r\n\t\t\t\t<div class=\"ax-coa-xcard\">\r\n\t\t\t\t\t<div class=\"ax-coa-xcard-icon\">\ud83e\uddea<\/div>\r\n\t\t\t\t\t<h3>Purity \u00b7 HPLC<\/h3>\r\n\t\t\t\t\t<p>The <strong>high-performance liquid chromatography (HPLC) method<\/strong> separates the sample into its components and shows the percentage of the target peptide, as well as any other peptides or by-products present.<\/p>\r\n\t\t\t\t\t<div class=\"ax-coa-xref\"><span class=\"ax-coa-xref-label\">Reference values<\/span> In research, <strong>&ge;95&nbsp;%<\/strong> is generally considered good, and <strong>&ge;98&nbsp;%<\/strong> is considered high purity. Our batches achieve <strong>&ge;99&nbsp;%<\/strong>.<\/div>\r\n\t\t\t\t<\/div>\r\n\r\n\t\t\t\t<div class=\"ax-coa-xcard\">\r\n\t\t\t\t\t<div class=\"ax-coa-xcard-icon\">\ud83d\udee1\ufe0f<\/div>\r\n\t\t\t\t\t<h3>Endotoxins \u00b7 LAL test<\/h3>\r\n\t\t\t\t\t<p>Endotoxins are bacterial residues measured in <strong>EU\/mg (Endotoxin Units)<\/strong> . The <strong>LAL test<\/strong> detects them with high sensitivity. Lower values indicate cleaner production. Detectable trace amounts are normal and reflect the sensitivity of the measurement.<\/p>\r\n\t\t\t\t\t<div class=\"ax-coa-xref\"><span class=\"ax-coa-xref-label\">Reference values<\/span> In the scientific literature, <strong>&lt;1&nbsp;EU\/mg<\/strong> is considered a conservative reference value for research, and <strong>&lt;0,1&nbsp;EU\/mg<\/strong> for particularly sensitive applications. Our values are well below these thresholds.<\/div>\r\n\t\t\t\t\t<a class=\"ax-coa-more\" href=\"https:\/\/aestx-systems.com\/en\/endotoxine-peptide-lal-test\/\">Endotoxins &amp; the LAL test explained in detail \u2192<\/a>\r\n\t\t\t\t<\/div>\r\n\r\n\t\t\t\t<div class=\"ax-coa-xcard\">\r\n\t\t\t\t\t<div class=\"ax-coa-xcard-icon\">\u2697\ufe0f<\/div>\r\n\t\t\t\t\t<h3>Heavy metals \u00b7 ICP-MS<\/h3>\r\n\t\t\t\t\t<p>The <strong>ICP mass spectrometry (ICP-MS)<\/strong> detects even minute quantities of heavy metals such as lead, arsenic, cadmium or mercury \u2014 residues that may originate from raw materials or synthesis and are not detected by HPLC.<\/p>\r\n\t\t\t\t\t<div class=\"ax-coa-xref\"><span class=\"ax-coa-xref-label\">Reference values<\/span> The reference is the <strong>ICH&nbsp;Q3D<\/strong>limits for elemental impurities. Our batches remain well within this reference.<\/div>\r\n\t\t\t\t<\/div>\r\n\r\n\t\t\t<\/div>\r\n\r\n\t\t\t<p class=\"ax-coa-note\">All information is provided exclusively for research documentation (Research Use Only). Reference values are drawn from publicly available scientific literature, including USP  and ICH Q3D, and provide context rather than regulatory approval or recommendations for use.<\/p>\r\n\t\t<\/div>\r\n\t<\/div>\r\n\r\n\t<!-- Lightbox -->\r\n\t<div class=\"ax-coa-lightbox\" id=\"axCoaLightbox\" aria-hidden=\"true\">\r\n\t\t<div class=\"ax-coa-lb-backdrop\"><\/div>\r\n\t\t<div class=\"ax-coa-lb-inner\">\r\n\t\t\t<button class=\"ax-coa-lb-close\" aria-label=\"Close\">\u00d7<\/button>\r\n\t\t\t<div class=\"ax-coa-lb-title\"><\/div>\r\n\t\t\t<div class=\"ax-coa-lb-imgwrap\"><img decoding=\"async\" src=\"\" alt=\"COA Report\"><\/div>\r\n\t\t\t<div class=\"ax-coa-lb-actions\">\r\n\t\t\t\t<a href=\"#\" class=\"ax-coa-lb-tab\" target=\"_blank\" rel=\"noopener\">Open in a new tab<\/a>\r\n\t\t\t\t<a href=\"#\" class=\"ax-coa-lb-verify\" target=\"_blank\" rel=\"noopener\">Verify with Janoshik \u2192<\/a>\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\t<\/div>\r\n\r\n\t<script>\r\n\t(function(){\r\n\t\tvar lb = document.getElementById('axCoaLightbox');\r\n\t\tif(!lb) return;\r\n\t\tvar img = lb.querySelector('.ax-coa-lb-imgwrap img');\r\n\t\tvar title = lb.querySelector('.ax-coa-lb-title');\r\n\t\tvar tab = lb.querySelector('.ax-coa-lb-tab');\r\n\t\tvar verify = lb.querySelector('.ax-coa-lb-verify');\r\n\t\tfunction open(src, ttl, ver){\r\n\t\t\timg.src = src; title.textContent = ttl;\r\n\t\t\ttab.href = src; verify.href = ver;\r\n\t\t\tlb.classList.add('open'); lb.setAttribute('aria-hidden','false');\r\n\t\t\tdocument.body.style.overflow='hidden';\r\n\t\t}\r\n\t\tfunction close(){ lb.classList.remove('open'); lb.setAttribute('aria-hidden','true'); document.body.style.overflow=''; img.src=''; }\r\n\t\tdocument.querySelectorAll('.ax-coa-view').forEach(function(a){\r\n\t\t\ta.addEventListener('click', function(e){\r\n\t\t\t\te.preventDefault();\r\n\t\t\t\topen(this.getAttribute('data-img'), this.getAttribute('data-title'), this.getAttribute('data-verify'));\r\n\t\t\t});\r\n\t\t});\r\n\t\tlb.querySelector('.ax-coa-lb-close').addEventListener('click', close);\r\n\t\tlb.querySelector('.ax-coa-lb-backdrop').addEventListener('click', close);\r\n\t\tdocument.addEventListener('keydown', function(e){ if(e.key==='Escape') close(); });\r\n\t})();\r\n\t<\/script>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-4172","page","type-page","status-publish","hentry"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":8}},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/aestx-systems.com\/en\/wp-json\/wp\/v2\/pages\/4172","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aestx-systems.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/aestx-systems.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/aestx-systems.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aestx-systems.com\/en\/wp-json\/wp\/v2\/comments?post=4172"}],"version-history":[{"count":1,"href":"https:\/\/aestx-systems.com\/en\/wp-json\/wp\/v2\/pages\/4172\/revisions"}],"predecessor-version":[{"id":4271,"href":"https:\/\/aestx-systems.com\/en\/wp-json\/wp\/v2\/pages\/4172\/revisions\/4271"}],"wp:attachment":[{"href":"https:\/\/aestx-systems.com\/en\/wp-json\/wp\/v2\/media?parent=4172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}