{"id":10602,"date":"2026-11-08T22:38:56","date_gmt":"2026-11-08T21:38:56","guid":{"rendered":"https:\/\/seamlessbio.de\/?p=10602"},"modified":"2026-11-08T22:38:57","modified_gmt":"2026-11-08T21:38:57","slug":"atmp-manufacturing-materials-gmp-eu","status":"publish","type":"post","link":"https:\/\/seamlessbio.de\/de\/atmp-manufacturing-materials-gmp-eu\/","title":{"rendered":"ATMP Manufacturing: Which Materials Ensure GMP Compliance \u2014 and Why EU Stock Decides"},"content":{"rendered":"<p><!-- SLUG: atmp-manufacturing-materials-gmp-eu | TITLE: ATMP Manufacturing: Which Materials Ensure GMP Compliance \u2014 and Why EU Stock Decides | KW: ATMP manufacturing materials GMP, cell therapy consumables EU, single-use bags ATMP GMP, CAR-T cell culture serum --><\/p>\n\n\n<style>\n.sb-atmp-wrap,\n.sb-atmp-wrap *,\n.sb-atmp-wrap *::before,\n.sb-atmp-wrap *::after { box-sizing: border-box; }\n\n.sb-atmp-wrap {\n  background: #fff;\n  padding: 60px 40px 90px;\n  font-family: Arial, sans-serif;\n  color: #202020;\n  max-width: 900px;\n  margin: 0 auto;\n}\n\n.sb-atmp-wrap h1 {\n  font-size: 38px;\n  font-weight: 900;\n  line-height: 1.1;\n  color: #0e1c2a;\n  margin: 0 0 20px;\n}\n\n.sb-atmp-wrap h2 {\n  font-size: 26px;\n  font-weight: 900;\n  color: #0e1c2a;\n  margin: 48px 0 14px;\n  border-left: 4px solid #18b7b2;\n  padding-left: 14px;\n}\n\n.sb-atmp-wrap h3 {\n  font-size: 19px;\n  font-weight: 800;\n  color: #18b7b2;\n  margin: 28px 0 8px;\n}\n\n.sb-atmp-wrap p {\n  font-size: 16px;\n  line-height: 1.75;\n  color: #3a3a3a;\n  margin: 0 0 16px;\n}\n\n.sb-atmp-meta {\n  display: flex;\n  align-items: center;\n  gap: 16px;\n  margin: 0 0 36px;\n  font-size: 14px;\n  color: #888;\n}\n\n.sb-atmp-tag {\n  display: inline-block;\n  padding: 4px 12px;\n  border-radius: 999px;\n  background: #e8f7f7;\n  color: #0d9490;\n  font-size: 12px;\n  font-weight: 800;\n  text-transform: uppercase;\n  letter-spacing: 0.06em;\n  margin-bottom: 20px;\n}\n\n.sb-atmp-intro {\n  background: linear-gradient(135deg, #18b7b2 0%, #0d9490 100%);\n  border-radius: 20px;\n  padding: 36px 40px;\n  margin: 0 0 40px;\n  color: #fff;\n}\n\n.sb-atmp-intro p {\n  color: rgba(255,255,255,0.95) !important;\n  font-size: 17px;\n  margin: 0;\n  line-height: 1.7;\n}\n\n.sb-atmp-hl {\n  background: #e8f7f7;\n  border-left: 4px solid #18b7b2;\n  border-radius: 0 10px 10px 0;\n  padding: 18px 22px;\n  margin: 24px 0;\n  color: #1a3a3a;\n  font-size: 15.5px;\n  line-height: 1.65;\n}\n\n.sb-atmp-hl strong { color: #0d9490; 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color: #444; line-height: 1.7; }\n\n.sb-atmp-materials {\n  display: flex;\n  flex-wrap: wrap;\n  gap: 8px;\n  margin-top: 14px;\n}\n\n.sb-atmp-mat-tag {\n  display: inline-flex;\n  align-items: center;\n  padding: 5px 14px;\n  border-radius: 999px;\n  background: #e8f7f7;\n  color: #0d9490;\n  font-size: 13px;\n  font-weight: 700;\n}\n\n.sb-atmp-table-wrap { overflow-x: auto; margin: 16px 0 32px; }\n\n.sb-atmp-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }\n\n.sb-atmp-table th {\n  background: #18b7b2 !important;\n  color: #fff !important;\n  padding: 11px 16px;\n  text-align: left;\n  font-weight: 700;\n}\n\n.sb-atmp-table td {\n  padding: 10px 16px;\n  border-bottom: 1px solid #e8f7f7;\n  color: #333;\n  vertical-align: top;\n}\n\n.sb-atmp-table tr:nth-child(even) td { background: #f0faf9; }\n\n.sb-atmp-check { list-style: none; padding: 0; margin: 12px 0; }\n\n.sb-atmp-check li {\n  position: relative;\n  padding: 8px 0 8px 26px;\n  border-bottom: 1px solid #e8f7f7;\n  font-size: 15px;\n  color: #444;\n  line-height: 1.55;\n}\n\n.sb-atmp-check li:last-child { border-bottom: none; }\n\n.sb-atmp-check li::before {\n  content: \"\u2713\";\n  position: absolute;\n  left: 0;\n  color: #18b7b2;\n  font-weight: 900;\n}\n\n.sb-atmp-faq { margin: 40px 0; }\n\n.sb-atmp-faq details {\n  border-bottom: 1px solid #ddeeed;\n  padding: 16px 0;\n}\n\n.sb-atmp-faq details:last-child { border-bottom: none; }\n\n.sb-atmp-faq summary {\n  font-size: 15.5px;\n  font-weight: 700;\n  color: #0e1c2a;\n  cursor: pointer;\n  list-style: none;\n  padding-right: 28px;\n  position: relative;\n  line-height: 1.45;\n}\n\n.sb-atmp-faq summary::-webkit-details-marker { display: none; }\n\n.sb-atmp-faq summary::after {\n  content: \"+\";\n  position: absolute;\n  right: 0;\n  color: #18b7b2;\n  font-size: 1.3rem;\n  font-weight: 700;\n}\n\n.sb-atmp-faq details[open] summary::after { content: \"\u2212\"; }\n.sb-atmp-faq details p { margin: 12px 0 4px; color: #444; font-size: 14.5px; line-height: 1.7; }\n\n.sb-atmp-cta {\n  background: #18b7b2;\n  border-radius: 24px;\n  padding: 44px 40px;\n  text-align: center;\n  margin-top: 52px;\n}\n\n.sb-atmp-cta h3 { color: #fff !important; font-size: 26px; margin: 0 0 10px; }\n.sb-atmp-cta p { color: rgba(255,255,255,0.92) !important; max-width: 580px; margin: 0 auto 24px; }\n\n.sb-atmp-cta a {\n  display: inline-flex;\n  align-items: center;\n  min-height: 44px;\n  padding: 0 28px;\n  border-radius: 999px;\n  background: #fff;\n  color: #0d9490 !important;\n  text-decoration: none !important;\n  font-weight: 900;\n  font-size: 14px;\n  text-transform: uppercase;\n  letter-spacing: 0.5px;\n  margin: 0 6px 8px;\n}\n\n.sb-atmp-cta a.outline {\n  background: transparent;\n  border: 2px solid rgba(255,255,255,0.75);\n  color: #fff !important;\n}\n\n.sb-atmp-related {\n  margin: 48px 0 0;\n  padding: 28px 32px;\n  background: #f0faf9;\n  border-radius: 18px;\n}\n\n.sb-atmp-related h4 { margin: 0 0 14px; font-size: 16px; font-weight: 900; color: #111; }\n\n.sb-atmp-related-links { display: flex; flex-wrap: wrap; gap: 10px; }\n\n.sb-atmp-related-links a {\n  display: inline-flex;\n  align-items: center;\n  padding: 8px 18px;\n  border-radius: 999px;\n  background: #fff;\n  border: 1px solid #c8e8e8;\n  color: #0d9490 !important;\n  text-decoration: none !important;\n  font-size: 14px;\n  font-weight: 700;\n  transition: all 0.2s;\n}\n\n.sb-atmp-related-links a:hover { background: #18b7b2; color: #fff !important; }\n\n@media (max-width: 700px) {\n  .sb-atmp-wrap { padding: 40px 16px 70px; }\n  .sb-atmp-wrap h1 { font-size: 28px; }\n  .sb-atmp-problem-grid { grid-template-columns: 1fr; }\n  .sb-atmp-intro { padding: 26px 22px; }\n  .sb-atmp-cta { padding: 32px 20px; }\n  .sb-atmp-step { padding: 20px; }\n}\n<\/style>\n\n<div class=\"sb-atmp-wrap\">\n\n  <span class=\"sb-atmp-tag\">ATMP &amp; Cell Therapy<\/span>\n\n  <div class=\"sb-atmp-meta\">\n    <span>\ud83d\udcc5 November 2026<\/span>\n    <span>\u00b7<\/span>\n    <span>\ud83d\udd50 10 min read<\/span>\n    <span>\u00b7<\/span>\n    <span>Pascal Zimmermann, SeamlessBio<\/span>\n  <\/div>\n\n  <div class=\"sb-atmp-intro\">\n    <p>\n      ATMP manufacturers don&#8217;t just fight the biology \u2014 they fight the procurement process.\n      Supply bottlenecks for GMP-grade sera, missing documentation packages, 8-week lead times\n      from US suppliers: these are the delays that push clinical timelines back by months.\n      This article covers which materials matter at each process step \u2014 and how to source them\n      from EU stock without minimum order constraints.\n    <\/p>\n  <\/div>\n\n  <h2>The three most common bottlenecks in ATMP production<\/h2>\n\n  <div class=\"sb-atmp-problem-grid\">\n    <div class=\"sb-atmp-problem-card\">\n      <div class=\"icon\">\u23f3<\/div>\n      <h4>Lead time<\/h4>\n      <p>Suppliers outside the EU: 6\u201312 weeks from order to delivery. Clinical production windows are not built for that.<\/p>\n    <\/div>\n    <div class=\"sb-atmp-problem-card\">\n      <div class=\"icon\">\ud83d\udcc4<\/div>\n      <h4>Documentation<\/h4>\n      <p>CoA, USP Class VI, BSE\/TSE declaration, gamma sterilisation certificate \u2014 available on request, not as standard. Slows supplier qualification significantly.<\/p>\n    <\/div>\n    <div class=\"sb-atmp-problem-card\">\n      <div class=\"icon\">\ud83d\udce6<\/div>\n      <h4>Minimum orders<\/h4>\n      <p>Pallet minimums for sera and single-use bags. Economically unworkable for small clinical batches.<\/p>\n    <\/div>\n  <\/div>\n\n  <div class=\"sb-atmp-hl\">\n    <strong>The result:<\/strong> ATMP programmes don&#8217;t get delayed at the production step \u2014 they get delayed at procurement. Three months of timeline slip on a clinical study costs more than a full year&#8217;s consumables budget.\n  <\/div>\n\n  <h2>Materials by process step \u2014 what actually matters<\/h2>\n\n  <p>ATMP manufacturing involves different process steps depending on the modality. Here are the most relevant \u2014 with the materials that determine success or rework in practice.<\/p>\n\n  <div class=\"sb-atmp-step\">\n    <div class=\"sb-atmp-step-header\">\n      <div class=\"sb-atmp-step-num\">01<\/div>\n      <div class=\"sb-atmp-step-title\">Cell expansion \u2014 T cells, iPSCs, MSCs, NK cells<\/div>\n    <\/div>\n    <div class=\"sb-atmp-step-body\">\n      <p>\n        Cell expansion is the most critical step: lot-to-lot variability in serum translates directly\n        into cell viability, yield and ultimately therapy outcome. CAR-T production, iPSC differentiation\n        and MSC expansion each have different requirements \u2014 but all share the need for a defined,\n        documented starting serum.\n      <\/p>\n      <p><strong>What gets used:<\/strong><\/p>\n      <ul class=\"sb-atmp-check\">\n        <li><strong>Human Serum (GMP Grade)<\/strong> \u2014 for xeno-free expansion protocols; preferred for human ATMPs; Type AB or pooled OTC depending on the protocol<\/li>\n        <li><strong>FBS Low Endotoxin<\/strong> \u2014 where FBS is still in the protocol; endotoxin control is critical for sensitive cell lines<\/li>\n        <li><strong>BSA \/ HSA<\/strong> \u2014 as medium supplement in serum-free formulations; BSA Fatty Acid-Free for lipid-sensitive cells<\/li>\n        <li><strong>Serum-Free Media<\/strong> \u2014 increasingly standard; HEK293 Medium GMP Grade for hybridoma and viral vector production<\/li>\n      <\/ul>\n      <div class=\"sb-atmp-materials\">\n        <span class=\"sb-atmp-mat-tag\">Human Serum GMP<\/span>\n        <span class=\"sb-atmp-mat-tag\">FBS Low Endotoxin<\/span>\n        <span class=\"sb-atmp-mat-tag\">BSA Fatty Acid-Free<\/span>\n        <span class=\"sb-atmp-mat-tag\">rHSA Premium<\/span>\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <div class=\"sb-atmp-step\">\n    <div class=\"sb-atmp-step-header\">\n      <div class=\"sb-atmp-step-num\">02<\/div>\n      <div class=\"sb-atmp-step-title\">Viral vector production \u2014 AAV, lentivirus, adenovirus<\/div>\n    <\/div>\n    <div class=\"sb-atmp-step-body\">\n      <p>\n        AAV and lentiviral vectors are produced in HEK293 or Sf9 cells. The production platform\n        dictates media requirements. HEK293-based production \u2014 the standard for AAV in clinical\n        development \u2014 requires a defined, serum-free medium with stable GMP documentation,\n        particularly when the material feeds into IND or IMPD dossiers.\n      <\/p>\n      <ul class=\"sb-atmp-check\">\n        <li><strong>Serum-Free HEK293 Medium GMP Grade<\/strong> \u2014 directly applicable for AAV and lentivirus production; supplied with full GMP documentation package<\/li>\n        <li><strong>2D Bioprocessing Bags<\/strong> \u2014 for media hold and small production volumes up to 50 L; ISO Class 7 cleanroom, gamma-sterilised<\/li>\n        <li><strong>3D Bioprocessing Bags<\/strong> \u2014 for scale-up of vector production 50\u20133,000 L; same certification basis as 2D<\/li>\n      <\/ul>\n      <div class=\"sb-atmp-materials\">\n        <span class=\"sb-atmp-mat-tag\">HEK293 Medium GMP<\/span>\n        <span class=\"sb-atmp-mat-tag\">2D Bioprocessing Bags<\/span>\n        <span class=\"sb-atmp-mat-tag\">3D Bioprocessing Bags<\/span>\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <div class=\"sb-atmp-step\">\n    <div class=\"sb-atmp-step-header\">\n      <div class=\"sb-atmp-step-num\">03<\/div>\n      <div class=\"sb-atmp-step-title\">Downstream \u2014 purification, formulation, fill<\/div>\n    <\/div>\n    <div class=\"sb-atmp-step-body\">\n      <p>\n        Downstream steps \u2014 chromatography, TFF, formulation \u2014 require large volumes of buffered\n        solutions and defined excipients. Single-use bags replace stainless steel tanks without\n        cleaning validation between batches. HSA and rHSA are used as stabilisers in final\n        drug product formulation.\n      <\/p>\n      <ul class=\"sb-atmp-check\">\n        <li><strong>3D Bioprocessing Bags (100\u20133,000 L)<\/strong> \u2014 buffer hold between chromatography steps; no CIP required<\/li>\n        <li><strong>HSA \/ rHSA<\/strong> \u2014 stabiliser in final formulation of cell therapy products and viral vectors<\/li>\n        <li><strong>BSA Low Endotoxin<\/strong> \u2014 for buffer formulations where BSA is used as a carrier protein<\/li>\n      <\/ul>\n      <div class=\"sb-atmp-materials\">\n        <span class=\"sb-atmp-mat-tag\">3D Bags 100\u20133,000 L<\/span>\n        <span class=\"sb-atmp-mat-tag\">HSA \/ rHSA<\/span>\n        <span class=\"sb-atmp-mat-tag\">BSA Low Endotoxin<\/span>\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <div class=\"sb-atmp-step\">\n    <div class=\"sb-atmp-step-header\">\n      <div class=\"sb-atmp-step-num\">04<\/div>\n      <div class=\"sb-atmp-step-title\">Quality control &amp; release<\/div>\n    <\/div>\n    <div class=\"sb-atmp-step-body\">\n      <p>\n        ATMP release under Annex 1 and EMA ATMP guidelines requires complete material documentation.\n        Every component in the process must be traceable \u2014 from raw material to final product.\n        Missing supplier documentation is the most common cause of delays in regulatory review.\n      <\/p>\n      <ul class=\"sb-atmp-check\">\n        <li>Certificate of Analysis (CoA) \u2014 lot-specific for every material<\/li>\n        <li>USP &lt;87&gt; \/ &lt;88&gt; Class VI certificate (bags and contact materials)<\/li>\n        <li>Gamma sterilisation certificate ISO 11137 (SAL 10\u207b\u2076)<\/li>\n        <li>BSE\/TSE-free declaration (sera and animal-derived products)<\/li>\n        <li>ISO Class 7 cleanroom declaration (single-use bags)<\/li>\n        <li>BPOG-aligned extractables data (on request)<\/li>\n      <\/ul>\n    <\/div>\n  <\/div>\n\n  <h2>Documentation package \u2014 what comes standard<\/h2>\n\n  <p>This is what SeamlessBio includes with every delivery as standard \u2014 no surcharge, no request form required:<\/p>\n\n  <div class=\"sb-atmp-table-wrap\">\n    <table class=\"sb-atmp-table\">\n      <thead>\n        <tr><th>Document<\/th><th>Sera &amp; Albumin<\/th><th>Single-Use Bags<\/th><th>Media<\/th><\/tr>\n      <\/thead>\n      <tbody>\n        <tr><td>Certificate of Analysis (CoA)<\/td><td>\u2713 Lot-specific<\/td><td>\u2713 Lot-specific<\/td><td>\u2713 Lot-specific<\/td><\/tr>\n        <tr><td>USP &lt;87&gt; \/ &lt;88&gt; Class VI<\/td><td>\u2713<\/td><td>\u2713<\/td><td>on request<\/td><\/tr>\n        <tr><td>ISO 10993 compliance<\/td><td>\u2713<\/td><td>\u2713<\/td><td>\u2014<\/td><\/tr>\n        <tr><td>BSE\/TSE-free declaration<\/td><td>\u2713<\/td><td>\u2014<\/td><td>\u2713 (animal-derived components)<\/td><\/tr>\n        <tr><td>Gamma sterilisation certificate<\/td><td>\u2014<\/td><td>\u2713 ISO 11137<\/td><td>\u2014<\/td><\/tr>\n        <tr><td>ISO Class 7 cleanroom declaration<\/td><td>\u2014<\/td><td>\u2713<\/td><td>\u2014<\/td><\/tr>\n        <tr><td>MSDS \/ SDS<\/td><td>\u2713<\/td><td>\u2713<\/td><td>\u2713<\/td><\/tr>\n        <tr><td>BPOG extractables data<\/td><td>\u2014<\/td><td>on request<\/td><td>\u2014<\/td><\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <div class=\"sb-atmp-hl\">\n    <strong>Why EU stock is non-negotiable for ATMP:<\/strong> Clinical study plans have fixed production windows. A 10-week supplier delay from outside the EU means study delay \u2014 with direct regulatory and financial consequences. EU stock with 2\u20135 business day delivery is not an advantage for ATMP programmes. It&#8217;s a requirement.\n  <\/div>\n\n  <h2>Who calls us \u2014 and why<\/h2>\n\n  <h3>ATMP CDMOs<\/h3>\n  <p>\n    Contract manufacturers running parallel client programmes need lot-specific documentation for each,\n    often with client-specific labelling. A EU supplier without minimum order requirements makes it\n    possible to supply three different CAR-T programmes in the same week \u2014 each with its own CoA\n    and its own shipping paperwork.\n  <\/p>\n\n  <h3>Academic ATMP facilities<\/h3>\n  <p>\n    University hospitals and research centres manufacturing ATMPs for Phase I clinical trials work\n    in very small volumes. A pallet minimum order for GMP human serum is economically unworkable.\n    SeamlessBio delivers single bottles with a full GMP documentation package \u2014 for clinical use,\n    not for screening.\n  <\/p>\n\n  <h3>Pharma companies scaling up ATMP<\/h3>\n  <p>\n    When a pharma company moves from Phase II pilot (100\u2013200 L) to Phase III commercial scale\n    (1,000\u20133,000 L), it needs the same supplier across both scales \u2014 with the same documentation\n    package. SeamlessBio supplies single-use bags from 50 mL to 3,000 L under one roof.\n  <\/p>\n\n  <h2>Frequently asked questions<\/h2>\n\n  <div class=\"sb-atmp-faq\">\n    <details>\n      <summary>Which serum is suitable for CAR-T cell expansion \u2014 Human Serum or FBS?<\/summary>\n      <p>It depends on the protocol. For human ATMP applications \u2014 anything that ultimately goes into a patient \u2014 Human Serum (Type AB or pooled OTC) is increasingly used, as it better meets xeno-free requirements and EMA guidelines for ATMPs. FBS Low Endotoxin with batch reservation is the alternative where the protocol is still FBS-based. SeamlessBio supplies both with full GMP documentation from EU stock.<\/p>\n    <\/details>\n\n    <details>\n      <summary>Which single-use bags are suitable for AAV vector production?<\/summary>\n      <p>2D bags (50 mL\u201350 L) for small volumes and 3D bags (50\u2013500 L) for scale-up. Both use RENOLIT 9101 multilayer film, are USP Class VI certified and gamma-sterilised (ISO 11137, SAL 10\u207b\u2076). The documentation package is suitable for IND\/IMPD submissions.<\/p>\n    <\/details>\n\n    <details>\n      <summary>How quickly can SeamlessBio deliver for unplanned production windows?<\/summary>\n      <p>Standard delivery from EU stock: 2\u20134 business days to Germany and Austria; 3\u20135 business days to Switzerland. Express delivery available on request. Contact us with your volume and required delivery date \u2014 we confirm availability the same day.<\/p>\n    <\/details>\n\n    <details>\n      <summary>Is batch reservation possible for clinical studies?<\/summary>\n      <p>Yes. For clinical programmes with fixed production plans, we reserve lots for 6\u201324 months \u2014 with binding price stability and guaranteed availability. Batch reservation documentation is suitable for regulatory dossiers. Contact us for a batch reservation quote.<\/p>\n    <\/details>\n\n    <details>\n      <summary>What documentation is needed for EMA ATMP submissions?<\/summary>\n      <p>For ATMP dossiers under EMA Regulation (EC) No 1394\/2007, typical requirements include: lot-specific CoA, USP Class VI certification, gamma sterilisation certificate, BSE\/TSE-free declaration, and extractables data. SeamlessBio provides all of these as standard with every delivery \u2014 no surcharge, no request form.<\/p>\n    <\/details>\n  <\/div>\n\n  <div class=\"sb-atmp-cta\">\n    <h3>Materials for your ATMP programme \u2014 from EU stock<\/h3>\n    <p>Tell us your process steps: cell expansion, viral vector production or downstream. We recommend the right material package including documentation \u2014 within 24 hours.<\/p>\n    <a href=\"\/about-us\/contact-imprint\/\">Get in touch<\/a>\n    <a href=\"https:\/\/shop.seamlessbio.de\" class=\"outline\">Visit the shop<\/a>\n  <\/div>\n\n  <div class=\"sb-atmp-related\">\n    <h4>Related topics<\/h4>\n    <div class=\"sb-atmp-related-links\">\n      <a href=\"https:\/\/seamlessbio.de\/2d-bioprocessing-bags\/\">2D Bioprocessing Bags<\/a>\n      <a href=\"https:\/\/seamlessbio.de\/3d-bioprocessing-bags\/\">3D Bioprocessing Bags<\/a>\n      <a href=\"https:\/\/seamlessbio.de\/human-serum\/\">Human Serum GMP<\/a>\n      <a href=\"https:\/\/seamlessbio.de\/dmpk-transporter-assays\/\">DMPK Transporter Assays<\/a>\n      <a href=\"https:\/\/seamlessbio.de\/car-t-cell-manufacturing\/\">CAR-T Manufacturing<\/a>\n    <\/div>\n  <\/div>\n\n<\/div>\n\n\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which serum is suitable for CAR-T cell expansion \u2014 Human Serum or FBS?\",\n      \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"For human ATMP applications, Human Serum (Type AB or pooled OTC) is increasingly used as it better meets xeno-free requirements and EMA ATMP guidelines. FBS Low Endotoxin with batch reservation is the alternative for FBS-based protocols. SeamlessBio supplies both with full GMP documentation from EU stock.\"}\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which single-use bags are suitable for AAV vector production?\",\n      \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"2D bags (50 mL\u201350 L) for small volumes and 3D bags (50\u2013500 L) for scale-up. Both use RENOLIT 9101 film, are USP Class VI certified and gamma-sterilised (ISO 11137, SAL 10\u207b\u2076). Documentation is suitable for IND\/IMPD submissions.\"}\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How quickly can SeamlessBio deliver for unplanned ATMP production windows?\",\n      \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"2\u20134 business days to Germany and Austria; 3\u20135 business days to Switzerland from EU stock. Express delivery available on request.\"}\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is batch reservation possible for ATMP clinical studies?\",\n      \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Lots can be reserved for 6\u201324 months with binding price stability. Batch reservation documentation is suitable for regulatory dossiers.\"}\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What documentation is needed for EMA ATMP submissions?\",\n      \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Lot-specific CoA, USP Class VI certification, gamma sterilisation certificate (ISO 11137), BSE\/TSE-free declaration, and extractables data. SeamlessBio provides all of these as standard with every delivery.\"}\n    }\n  ]\n}\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>ATMP &amp; Cell Therapy \ud83d\udcc5 November 2026 \u00b7 \ud83d\udd50 10 min read \u00b7 Pascal Zimmermann, SeamlessBio ATMP manufacturers don&#8217;t just fight the biology \u2014 they fight the procurement process. Supply bottlenecks for GMP-grade sera, missing documentation packages, 8-week lead times from US suppliers: these are the delays that push clinical timelines back by months. This [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_templately_pack_id":"","_templately_imported_at":"","_templately_source":"","_templately_import_session_id":"","footnotes":""},"categories":[46],"tags":[],"class_list":["post-10602","post","type-post","status-publish","format-standard","hentry","category-cell-culture"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ATMP Manufacturing: Which Materials Ensure GMP Compliance<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/seamlessbio.de\/de\/atmp-manufacturing-materials-gmp-eu\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ATMP Manufacturing: Which Materials Ensure GMP Compliance\" \/>\n<meta property=\"og:description\" content=\"ATMP &amp; Cell Therapy \ud83d\udcc5 November 2026 \u00b7 \ud83d\udd50 10 min read \u00b7 Pascal Zimmermann, SeamlessBio ATMP manufacturers don&#8217;t just fight the biology \u2014 they fight the procurement process. 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