{"id":322,"date":"2026-08-22T13:24:04","date_gmt":"2026-08-22T13:24:04","guid":{"rendered":"https:\/\/www.peptidelab.co.il\/lab-tests\/"},"modified":"2026-08-23T10:45:38","modified_gmt":"2026-08-23T10:45:38","slug":"lab-tests","status":"publish","type":"page","link":"https:\/\/www.peptidelab.co.il\/en\/lab-tests\/","title":{"rendered":"Lab testing \u2014 Certificates of Analysis (COA)"},"content":{"rendered":"<p>At Peptide Lab we believe that transparency is a fundamental requirement, not an add-on. Every compound in the catalog is sent for testing at an<strong>independent laboratory<\/strong> \u2014 <strong>Janoshik Analytical<\/strong>, one of the world's leading testing laboratories for research materials \u2014 and receives a <strong>Certificate of Analysis (COA)<\/strong> that verifies the compound's identity and its purity percentage.<\/p>\n<h2>What does a Certificate of Analysis (COA) show?<\/h2>\n<p>Every COA includes the compound's identity (verified by mass spectrometry), the purity percentage (by HPLC testing), the test date, and<strong>a unique verification key<\/strong> \u2014 so that anyone can verify the result directly with the laboratory on the site <a href=\"https:\/\/www.janoshik.com\/verify\/\" target=\"_blank\" rel=\"noopener nofollow\">janoshik.com\/verify<\/a>. For a detailed explanation of what a COA tests and how to read it, see <a href=\"\/en\/buy-peptides-israel\/\">the peptide-buying guide<\/a>.<\/p>\n<h2>Our Certificates of Analysis<\/h2>\n<p>Click any certificate to enlarge, or a product name to go to its page:<\/p>\n<div class=\"pl-coagal\"><figure class=\"pl-coagal__i\"><a class=\"pl-coagal__img\" href=\"https:\/\/www.peptidelab.co.il\/wp-content\/uploads\/coa\/coa-bpc-157.png?v=1788188291\" target=\"_blank\" rel=\"noopener\" title=\"\u05dc\u05d7\u05e6\u05d5 \u05dc\u05d4\u05d2\u05d3\u05dc\u05d4\"><img decoding=\"async\" src=\"https:\/\/www.peptidelab.co.il\/wp-content\/uploads\/coa\/coa-bpc-157.png?v=1788188291\" alt=\"\u05ea\u05e2\u05d5\u05d3\u05ea \u05d0\u05e0\u05dc\u05d9\u05d6\u05d4 (COA) BPC-157 \u2014 Janoshik\" loading=\"lazy\"><\/a><figcaption><a href=\"https:\/\/www.peptidelab.co.il\/en\/product\/bpc-157\/\">BPC-157<\/a><\/figcaption><\/figure><figure class=\"pl-coagal__i\"><a class=\"pl-coagal__img\" href=\"https:\/\/www.peptidelab.co.il\/wp-content\/uploads\/coa\/coa-tb-500.png?v=1787404768\" target=\"_blank\" rel=\"noopener\" title=\"\u05dc\u05d7\u05e6\u05d5 \u05dc\u05d4\u05d2\u05d3\u05dc\u05d4\"><img decoding=\"async\" src=\"https:\/\/www.peptidelab.co.il\/wp-content\/uploads\/coa\/coa-tb-500.png?v=1787404768\" alt=\"\u05ea\u05e2\u05d5\u05d3\u05ea \u05d0\u05e0\u05dc\u05d9\u05d6\u05d4 (COA) TB-500 \u2014 Janoshik\" loading=\"lazy\"><\/a><figcaption><a href=\"https:\/\/www.peptidelab.co.il\/en\/product\/tb-500\/\">TB-500<\/a><\/figcaption><\/figure><figure class=\"pl-coagal__i\"><a class=\"pl-coagal__img\" href=\"https:\/\/www.peptidelab.co.il\/wp-content\/uploads\/coa\/coa-cjc-ipamorelin.png?v=1787404768\" target=\"_blank\" rel=\"noopener\" title=\"\u05dc\u05d7\u05e6\u05d5 \u05dc\u05d4\u05d2\u05d3\u05dc\u05d4\"><img decoding=\"async\" src=\"https:\/\/www.peptidelab.co.il\/wp-content\/uploads\/coa\/coa-cjc-ipamorelin.png?v=1787404768\" alt=\"\u05ea\u05e2\u05d5\u05d3\u05ea \u05d0\u05e0\u05dc\u05d9\u05d6\u05d4 (COA) CJC-1295 + Ipamorelin \u2014 Janoshik\" loading=\"lazy\"><\/a><figcaption><a href=\"https:\/\/www.peptidelab.co.il\/en\/product\/cjc-ipamorelin\/\">CJC-1295 + Ipamorelin<\/a><\/figcaption><\/figure><figure class=\"pl-coagal__i\"><a class=\"pl-coagal__img\" href=\"https:\/\/www.peptidelab.co.il\/wp-content\/uploads\/coa\/coa-ghk-cu.png?v=1788188291\" target=\"_blank\" rel=\"noopener\" title=\"\u05dc\u05d7\u05e6\u05d5 \u05dc\u05d4\u05d2\u05d3\u05dc\u05d4\"><img decoding=\"async\" src=\"https:\/\/www.peptidelab.co.il\/wp-content\/uploads\/coa\/coa-ghk-cu.png?v=1788188291\" alt=\"\u05ea\u05e2\u05d5\u05d3\u05ea \u05d0\u05e0\u05dc\u05d9\u05d6\u05d4 (COA) GHK-Cu \u2014 Janoshik\" loading=\"lazy\"><\/a><figcaption><a href=\"https:\/\/www.peptidelab.co.il\/en\/product\/ghk-cu\/\">GHK-Cu<\/a><\/figcaption><\/figure><figure class=\"pl-coagal__i\"><a class=\"pl-coagal__img\" href=\"https:\/\/www.peptidelab.co.il\/wp-content\/uploads\/coa\/coa-retatrutide.png?v=1788188291\" target=\"_blank\" rel=\"noopener\" title=\"\u05dc\u05d7\u05e6\u05d5 \u05dc\u05d4\u05d2\u05d3\u05dc\u05d4\"><img decoding=\"async\" src=\"https:\/\/www.peptidelab.co.il\/wp-content\/uploads\/coa\/coa-retatrutide.png?v=1788188291\" alt=\"\u05ea\u05e2\u05d5\u05d3\u05ea \u05d0\u05e0\u05dc\u05d9\u05d6\u05d4 (COA) \u05e8\u05d8\u05d0 (Retatrutide) \u2014 Janoshik\" loading=\"lazy\"><\/a><figcaption><a href=\"https:\/\/www.peptidelab.co.il\/en\/product\/retatrutide-20\/\">Reta (Retatrutide)<\/a><\/figcaption><\/figure><figure class=\"pl-coagal__i\"><a class=\"pl-coagal__img\" href=\"https:\/\/www.peptidelab.co.il\/wp-content\/uploads\/coa\/coa-selank.png?v=1787404768\" target=\"_blank\" rel=\"noopener\" title=\"\u05dc\u05d7\u05e6\u05d5 \u05dc\u05d4\u05d2\u05d3\u05dc\u05d4\"><img decoding=\"async\" src=\"https:\/\/www.peptidelab.co.il\/wp-content\/uploads\/coa\/coa-selank.png?v=1787404768\" alt=\"\u05ea\u05e2\u05d5\u05d3\u05ea \u05d0\u05e0\u05dc\u05d9\u05d6\u05d4 (COA) Selank \u2014 Janoshik\" loading=\"lazy\"><\/a><figcaption><a href=\"https:\/\/www.peptidelab.co.il\/en\/product\/selank\/\">Selank<\/a><\/figcaption><\/figure><figure class=\"pl-coagal__i\"><a class=\"pl-coagal__img\" href=\"https:\/\/www.peptidelab.co.il\/wp-content\/uploads\/coa\/coa-mots-c.jpg?v=1787404768\" target=\"_blank\" rel=\"noopener\" title=\"\u05dc\u05d7\u05e6\u05d5 \u05dc\u05d4\u05d2\u05d3\u05dc\u05d4\"><img decoding=\"async\" src=\"https:\/\/www.peptidelab.co.il\/wp-content\/uploads\/coa\/coa-mots-c.jpg?v=1787404768\" alt=\"\u05ea\u05e2\u05d5\u05d3\u05ea \u05d0\u05e0\u05dc\u05d9\u05d6\u05d4 (COA) MOTS-c \u2014 Janoshik\" loading=\"lazy\"><\/a><figcaption><a href=\"https:\/\/www.peptidelab.co.il\/en\/product\/mots-c\/\">MOTS-c<\/a><\/figcaption><\/figure><figure class=\"pl-coagal__i\"><a class=\"pl-coagal__img\" href=\"https:\/\/www.peptidelab.co.il\/wp-content\/uploads\/coa\/coa-nad.png?v=1788188291\" target=\"_blank\" rel=\"noopener\" title=\"\u05dc\u05d7\u05e6\u05d5 \u05dc\u05d4\u05d2\u05d3\u05dc\u05d4\"><img decoding=\"async\" src=\"https:\/\/www.peptidelab.co.il\/wp-content\/uploads\/coa\/coa-nad.png?v=1788188291\" alt=\"\u05ea\u05e2\u05d5\u05d3\u05ea \u05d0\u05e0\u05dc\u05d9\u05d6\u05d4 (COA) NAD+ \u2014 Janoshik\" loading=\"lazy\"><\/a><figcaption><a href=\"https:\/\/www.peptidelab.co.il\/en\/product\/nad\/\">NAD+<\/a><\/figcaption><\/figure><figure class=\"pl-coagal__i\"><a class=\"pl-coagal__img\" href=\"https:\/\/www.peptidelab.co.il\/wp-content\/uploads\/coa\/coa-semax.jpg?v=1787404768\" target=\"_blank\" rel=\"noopener\" title=\"\u05dc\u05d7\u05e6\u05d5 \u05dc\u05d4\u05d2\u05d3\u05dc\u05d4\"><img decoding=\"async\" src=\"https:\/\/www.peptidelab.co.il\/wp-content\/uploads\/coa\/coa-semax.jpg?v=1787404768\" alt=\"\u05ea\u05e2\u05d5\u05d3\u05ea \u05d0\u05e0\u05dc\u05d9\u05d6\u05d4 (COA) Semax \u2014 Janoshik\" loading=\"lazy\"><\/a><figcaption><a href=\"https:\/\/www.peptidelab.co.il\/en\/product\/semax\/\">Semax<\/a><\/figcaption><\/figure><figure class=\"pl-coagal__i\"><a class=\"pl-coagal__img\" href=\"https:\/\/www.peptidelab.co.il\/wp-content\/uploads\/coa\/coa-tesamorelin.jpg?v=1787404768\" target=\"_blank\" rel=\"noopener\" title=\"\u05dc\u05d7\u05e6\u05d5 \u05dc\u05d4\u05d2\u05d3\u05dc\u05d4\"><img decoding=\"async\" src=\"https:\/\/www.peptidelab.co.il\/wp-content\/uploads\/coa\/coa-tesamorelin.jpg?v=1787404768\" alt=\"\u05ea\u05e2\u05d5\u05d3\u05ea \u05d0\u05e0\u05dc\u05d9\u05d6\u05d4 (COA) Tesamorelin \u2014 Janoshik\" loading=\"lazy\"><\/a><figcaption><a href=\"https:\/\/www.peptidelab.co.il\/en\/product\/tesamorelin\/\">Tesamorelin<\/a><\/figcaption><\/figure><\/div><style>.pl-coagal{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:18px;direction:rtl;margin:8px 0 4px}.pl-coagal__i{margin:0;border:1px solid #e3e9f3;border-radius:12px;overflow:hidden;background:#fff;box-shadow:0 2px 12px rgba(19,24,36,.06);transition:box-shadow .18s,transform .18s}.pl-coagal__i:hover{box-shadow:0 6px 20px rgba(19,24,36,.12);transform:translateY(-3px)}.pl-coagal__img{display:block;background:#f7f9fc}.pl-coagal__img img{display:block;width:100%;height:auto}.pl-coagal figcaption{padding:.6rem .8rem;text-align:center;font-weight:600}.pl-coagal figcaption a{color:#1f6feb;text-decoration:none}.pl-coagal figcaption a:hover{text-decoration:underline}<\/style>\n<p><em>To protect the supply chain, only the supplier\/manufacturer details have been hidden; the test data, purity percentage, and verification key are original and unaltered. All products are for research use only.<\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>\u05d1-Peptide Lab \u05d0\u05e0\u05d7\u05e0\u05d5 \u05de\u05d0\u05de\u05d9\u05e0\u05d9\u05dd \u05e9\u05e9\u05e7\u05d9\u05e4\u05d5\u05ea \u05d4\u05d9\u05d0 \u05ea\u05e0\u05d0\u05d9 \u05d1\u05e1\u05d9\u05e1\u05d9, \u05dc\u05d0 \u05ea\u05d5\u05e1\u05e4\u05ea. \u05db\u05dc \u05ea\u05e8\u05db\u05d5\u05d1\u05ea \u05d1\u05e7\u05d8\u05dc\u05d5\u05d2 \u05e0\u05e9\u05dc\u05d7\u05ea \u05dc\u05d1\u05d3\u05d9\u05e7\u05d4 \u05d1\u05de\u05e2\u05d1\u05d3\u05d4 \u05e2\u05e6\u05de\u05d0\u05d9\u05ea \u2014 Janoshik Analytical, \u05d0\u05d7\u05ea \u05de\u05de\u05e2\u05d1\u05d3\u05d5\u05ea \u05d4\u05d1\u05d3\u05d9\u05e7\u05d4 \u05d4\u05de\u05d5\u05d1\u05d9\u05dc\u05d5\u05ea \u05d1\u05e2\u05d5\u05dc\u05dd \u05dc\u05d7\u05d5\u05de\u05e8\u05d9 \u05de\u05d7\u05e7\u05e8 \u2014 \u05d5\u05de\u05e7\u05d1\u05dc\u05ea \u05ea\u05e2\u05d5\u05d3\u05ea \u05d0\u05e0\u05dc\u05d9\u05d6\u05d4 (COA) \u05d4\u05de\u05d0\u05de\u05ea\u05ea \u05d0\u05ea \u05d6\u05d4\u05d5\u05ea \u05d4\u05ea\u05e8\u05db\u05d5\u05d1\u05ea \u05d5\u05d0\u05ea \u05d0\u05d7\u05d5\u05d6 \u05d4\u05d8\u05d5\u05d4\u05e8 \u05e9\u05dc\u05d4. \u05de\u05d4 \u05de\u05e8\u05d0\u05d4 \u05ea\u05e2\u05d5\u05d3\u05ea \u05d0\u05e0\u05dc\u05d9\u05d6\u05d4 (COA)? \u05db\u05dc COA \u05db\u05d5\u05dc\u05dc \u05d0\u05ea \u05d6\u05d4\u05d5\u05ea \u05d4\u05ea\u05e8\u05db\u05d5\u05d1\u05ea (\u05de\u05d0\u05d5\u05de\u05ea\u05ea \u05d1\u05e1\u05e4\u05e7\u05d8\u05e8\u05d5\u05de\u05d8\u05e8\u05d9\u05d9\u05ea \u05de\u05e1\u05d4), \u05d0\u05ea [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_joinchat":[],"footnotes":""},"class_list":["post-322","page","type-page","status-publish","hentry"],"blocksy_meta":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.peptidelab.co.il\/en\/wp-json\/wp\/v2\/pages\/322","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.peptidelab.co.il\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.peptidelab.co.il\/en\/wp-json\/wp\/v2\/types\/page"}],"replies":[{"embeddable":true,"href":"https:\/\/www.peptidelab.co.il\/en\/wp-json\/wp\/v2\/comments?post=322"}],"version-history":[{"count":1,"href":"https:\/\/www.peptidelab.co.il\/en\/wp-json\/wp\/v2\/pages\/322\/revisions"}],"predecessor-version":[{"id":385,"href":"https:\/\/www.peptidelab.co.il\/en\/wp-json\/wp\/v2\/pages\/322\/revisions\/385"}],"wp:attachment":[{"href":"https:\/\/www.peptidelab.co.il\/en\/wp-json\/wp\/v2\/media?parent=322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}