{"id":709,"date":"2026-05-14T16:20:42","date_gmt":"2026-05-14T15:20:42","guid":{"rendered":"http:\/\/seamlessbio.de\/?page_id=709"},"modified":"2026-07-06T21:33:56","modified_gmt":"2026-07-06T20:33:56","slug":"custom-cell-banking","status":"publish","type":"page","link":"https:\/\/seamlessbio.de\/de\/custom-cell-banking\/","title":{"rendered":"Application Cell Banking"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"709\" class=\"elementor elementor-709\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e8bf0fc e-con e-atomic-element e-flexbox-base e-f407752 \" data-id=\"e8bf0fc\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"e8bf0fc\">\n    \t\t<div class=\"elementor-element elementor-element-29885d8 elementor-widget elementor-widget-html\" data-id=\"29885d8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<!-- YOAST SEO SETTINGS\nSlug:             applications\/custom-cell-banking\nFocus Keyword:    custom cell banking MCB WCB cryopreservation FBS GMP serum\nSEO Title (EN):   Custom Cell Banking \u2014 MCB, WCB & GMP Cryopreservation | SeamlessBio\nMeta Desc (EN):   Custom cell banking services: MCB creation, WCB development, GMP-grade banking, cell line authentication. FBS ES Cell Pre-Tested, rHSA, hPL. Full documentation. ICH Q5A\/Q5D. 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.ctab1,.sb-app .ctab2{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 28px;border-radius:999px;font-size:13px;font-weight:900;text-transform:uppercase;letter-spacing:.6px;text-decoration:none!important;transition:all .25s;}\n.sb-app .ctab1{background:#18b7b2;color:#fff!important;}\n.sb-app .ctab1:hover{background:#139b97;transform:translateY(-2px);}\n.sb-app .ctab2{background:transparent;border:2px solid #18b7b2;color:#18b7b2!important;}\n.sb-app .ctab2:hover{background:#18b7b2;color:#fff!important;transform:translateY(-2px);}\n@media(max-width:1100px){.sb-app .hero{padding:48px 36px;}.sb-app .svc-grid{grid-template-columns:repeat(2,1fr);}.sb-app .rel-grid{grid-template-columns:1fr;}}\n@media(max-width:700px){.sb-app{padding:50px 16px 70px;}.sb-app .hero{padding:40px 24px;border-radius:24px;}.sb-app .hero h1{font-size:25px;}.sb-app .hbtns,.sb-app .ctabtns{flex-direction:column;}.sb-app .btn1,.sb-app .btn2,.sb-app .ctab1,.sb-app .ctab2{width:100%;}.sb-app .svc-grid{grid-template-columns:1fr;}.sb-app .step{grid-template-columns:1fr;}.sb-app .sec,.sb-app .faq{padding:20px;}.sb-app .cta{padding:36px 20px;}}\n<\/style>\n<div class=\"wrap\">\n  <div class=\"bc\">\n    <a href=\"http:\/\/seamlessbio.de\/\">Home<\/a><span>\/<\/span>\n    <a href=\"https:\/\/www.seamlessbio.de\/applications\/\">Applications<\/a><span>\/<\/span>\n    <strong>Custom Cell Banking<\/strong>\n  <\/div>\n\n  <div class=\"hero\">\n    <span class=\"ey\">SeamlessBio \u2014 MCB \u00b7 WCB \u00b7 GMP Cell Banking \u00b7 ICH Q5A\/Q5D<\/span>\n    <h1>Custom Cell Banking \u2014 MCB, WCB &amp; GMP Cryopreservation Guide<\/h1>\n    <p class=\"sub\">Cell lines are invaluable research assets representing years of development and investment. Loss of a critical cell line due to contamination, genetic drift, or storage failure can set back research programs by months or years. SeamlessBio supplies all critical reagents for successful cell banking \u2014 from research-grade to GMP-compliant.<\/p>\n    <div class=\"hbtns\">\n      <a href=\"mailto:info@seamlessbio.de?subject=Cell%20Banking%20Consultation\" class=\"btn1\">Request Consultation<\/a>\n      <a href=\"https:\/\/shop.seamlessbio.de\" class=\"btn2\">View in Shop<\/a>\n    <\/div>\n  <\/div>\n\n  <!-- 6 SERVICES -->\n  <h2 style=\"font-size:22px;font-weight:900;color:#111;margin:0 0 20px;\">Comprehensive Cell Banking Solutions<\/h2>\n  <div class=\"svc-grid\">\n    <div class=\"svc\">\n      <div class=\"svc-tag\">Foundation<\/div>\n      <h3>Master Cell Bank (MCB)<\/h3>\n      <p>The original authenticated cell stock serving as the foundation for all future work.<\/p>\n      <ul>\n        <li>Identity authentication (STR profiling)<\/li>\n        <li>Mycoplasma testing<\/li>\n        <li>Viability assessment (&gt;90% post-thaw)<\/li>\n        <li>Sterility testing<\/li>\n        <li>Comprehensive documentation<\/li>\n        <li>Typical: 50\u2013100 vials<\/li>\n      <\/ul>\n    <\/div>\n    <div class=\"svc\">\n      <div class=\"svc-tag\">Working Stocks<\/div>\n      <h3>Working Cell Bank (WCB)<\/h3>\n      <p>Derived from MCB within defined passage \u2014 for routine laboratory use.<\/p>\n      <ul>\n        <li>Derived from MCB within defined passage<\/li>\n        <li>Quality control testing<\/li>\n        <li>Growth characterization<\/li>\n        <li>Mycoplasma screening<\/li>\n        <li>Full traceability to MCB<\/li>\n        <li>Typical: 100\u2013200 vials<\/li>\n      <\/ul>\n    <\/div>\n    <div class=\"svc\">\n      <div class=\"svc-tag\">Optimisation<\/div>\n      <h3>Cryopreservation Optimisation<\/h3>\n      <p>Develop and validate optimal freezing protocols for your specific cell lines.<\/p>\n      <ul>\n        <li>Cell-type-specific protocol development<\/li>\n        <li>Cryoprotectant optimisation (DMSO concentration)<\/li>\n        <li>Controlled-rate freezing protocols<\/li>\n        <li>Post-thaw viability &gt;90%<\/li>\n        <li>Long-term stability studies<\/li>\n      <\/ul>\n    <\/div>\n    <div class=\"svc\">\n      <div class=\"svc-tag\">Regulatory<\/div>\n      <h3>GMP-Grade Cell Banking<\/h3>\n      <p>Regulatory-compliant cell banking for clinical and commercial applications.<\/p>\n      <ul>\n        <li>Full cGMP compliance<\/li>\n        <li>Extensive testing (ICH Q5A, Q5D)<\/li>\n        <li>Adventitious agent testing<\/li>\n        <li>Complete documentation packages<\/li>\n        <li>Regulatory support for IND\/BLA<\/li>\n      <\/ul>\n    <\/div>\n    <div class=\"svc\">\n      <div class=\"svc-tag\">Authentication<\/div>\n      <h3>Cell Line Authentication<\/h3>\n      <p>Verify identity and purity through comprehensive testing.<\/p>\n      <ul>\n        <li>STR profiling (short tandem repeat)<\/li>\n        <li>Species verification<\/li>\n        <li>Mycoplasma detection (PCR)<\/li>\n        <li>Comparison to reference databases<\/li>\n        <li>Certificate of authentication<\/li>\n      <\/ul>\n    <\/div>\n    <div class=\"svc\">\n      <div class=\"svc-tag\">Storage<\/div>\n      <h3>Long-Term Storage<\/h3>\n      <p>Secure, monitored cryogenic storage with full traceability.<\/p>\n      <ul>\n        <li>Liquid nitrogen vapor phase storage<\/li>\n        <li>24\/7 temperature monitoring<\/li>\n        <li>Backup power systems<\/li>\n        <li>Automated inventory management<\/li>\n        <li>Flexible retrieval options<\/li>\n      <\/ul>\n    <\/div>\n  <\/div>\n\n  <!-- PROCESS STEPS -->\n  <div class=\"sec\">\n    <h2>Cell Banking Process: From Consultation to Delivery<\/h2>\n    <div class=\"steps\">\n      <div class=\"step\">\n        <div class=\"step-num\">1<\/div>\n        <div>\n          <h3>Initial Consultation &amp; Assessment<\/h3>\n          <p>We discuss your specific needs, cell line characteristics, and intended applications. Our experts recommend the optimal banking strategy including serum grade selection and cryoprotectant.<\/p>\n          <div class=\"meta\">Timeline: 1\u20132 weeks | Deliverable: Custom protocol proposal<\/div>\n        <\/div>\n      <\/div>\n      <div class=\"step\">\n        <div class=\"step-num\">2<\/div>\n        <div>\n          <h3>Cell Receipt &amp; Expansion<\/h3>\n          <p>Your cells are received, authenticated, and expanded under optimal conditions using premium media and reserved serum lots from our validated suppliers. Strict passage control maintained.<\/p>\n          <div class=\"meta\">Timeline: 2\u20134 weeks | Deliverable: Expansion report with passage documentation<\/div>\n        <\/div>\n      <\/div>\n      <div class=\"step\">\n        <div class=\"step-num\">3<\/div>\n        <div>\n          <h3>Quality Control Testing<\/h3>\n          <p>Comprehensive QC panel including viability, mycoplasma screening (PCR \u00b1 culture), sterility testing, and identity verification (STR profiling). Additional ICH Q5A adventitious agent testing for GMP applications.<\/p>\n          <div class=\"meta\">Timeline: 1\u20133 weeks | Deliverable: QC test reports per parameter<\/div>\n        <\/div>\n      <\/div>\n      <div class=\"step\">\n        <div class=\"step-num\">4<\/div>\n        <div>\n          <h3>Cryopreservation &amp; Banking<\/h3>\n          <p>Cells frozen using validated controlled-rate protocols with optimised cryoprotectant (DMSO concentration validated per cell type). Each vial labeled, logged, and stored under monitored conditions.<\/p>\n          <div class=\"meta\">Timeline: 1 week | Deliverable: Frozen cell bank vials + freezing record<\/div>\n        <\/div>\n      <\/div>\n      <div class=\"step\">\n        <div class=\"step-num\">5<\/div>\n        <div>\n          <h3>Post-Thaw Viability Verification<\/h3>\n          <p>Representative vials thawed to confirm &gt;90% viability (GMP) or &gt;85% (research) and normal growth characteristics. Recovery protocols documented for your laboratory.<\/p>\n          <div class=\"meta\">Timeline: 1\u20132 weeks | Deliverable: Thaw validation report<\/div>\n        <\/div>\n      <\/div>\n      <div class=\"step\">\n        <div class=\"step-num\">6<\/div>\n        <div>\n          <h3>Documentation &amp; Delivery<\/h3>\n          <p>Complete documentation package: Certificate of Analysis, banking record, culture protocols, QC data, regulatory documentation. Cells shipped on dry ice with temperature monitoring.<\/p>\n          <div class=\"meta\">Standard: 6\u201310 weeks total | GMP: 12\u201316 weeks including extended testing<\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <!-- SERUM GUIDE -->\n  <div class=\"sec\">\n    <h2>Serum by Cell Type \u2014 Cryopreservation Selection Guide<\/h2>\n    <div class=\"tw\">\n      <table>\n        <thead><tr><th>Cell Type<\/th><th>Cryopreservation Medium<\/th><th>Key Note<\/th><\/tr><\/thead>\n        <tbody>\n          <tr>\n            <td><strong>Standard cell lines (CHO, HEK293, Vero, HeLa)<\/strong><\/td>\n            <td>90% <a href=\"https:\/\/www.seamlessbio.de\/products\/fetal-bovine-serum\/fbs-low-very-low-endotoxin\">FBS Low Endotoxin \u22645 EU\/mL<\/a> + 10% DMSO<\/td>\n            <td>Low Endotoxin mandatory \u2014 endotoxin activates innate immune genes during freeze-thaw, affecting recovered cell quality<\/td>\n          <\/tr>\n          <tr>\n            <td><strong>PBMC \u2014 research or clinical immunomonitoring<\/strong><\/td>\n            <td>90% <a href=\"https:\/\/www.seamlessbio.de\/products\/fetal-bovine-serum\/fbs-low-very-low-endotoxin\">FBS Very Low Endotoxin \u22641 EU\/mL<\/a> or 90% <a href=\"https:\/\/www.seamlessbio.de\/products\/human-sera-plasma-and-more\/human-serum-type-ab-male\">Human Serum AB HI<\/a> + 10% DMSO<\/td>\n            <td>Endotoxin activates PBMCs during freeze-thaw \u2014 reduces post-thaw functional recovery<\/td>\n          <\/tr>\n          <tr>\n            <td><strong>iPSC \u2014 research grade<\/strong><\/td>\n            <td>90% <a href=\"https:\/\/www.seamlessbio.de\/products\/fetal-bovine-serum\/fbs-es-cell-pre-tested\">FBS ES Cell Pre-Tested<\/a> + 10% DMSO<\/td>\n            <td>Same lot as culture medium \u2014 lot change causes differentiation stress. ES Cell Pre-Tested screened for pluripotency maintenance<\/td>\n          <\/tr>\n          <tr>\n            <td><strong>iPSC \u2014 GMP \/ clinical<\/strong><\/td>\n            <td>4\u201310% <a href=\"https:\/\/www.seamlessbio.de\/products\/albumin-proteins\/rec-human-serum-albumin-rec-hsa\/rhsa-premium-grade\">rHSA Premium Grade<\/a> + 10% DMSO in DMEM\/F12<\/td>\n            <td>Xeno-free regulatory path \u2014 no animal components. ISO 13485 documentation for GMP dossier<\/td>\n          <\/tr>\n          <tr>\n            <td><strong>MSC (mesenchymal stem cells)<\/strong><\/td>\n            <td>90% <a href=\"https:\/\/www.seamlessbio.de\/products\/human-sera-plasma-and-more\/human-platelet-lysate-hpl\">hPL<\/a> + 10% DMSO or xeno-free cryo medium<\/td>\n            <td>Xeno-free cryoprotection with high growth factor content. EU GMP-grade for MSC-based ATMP banks<\/td>\n          <\/tr>\n          <tr>\n            <td><strong>T cells \/ NK cells (CAR-T bank)<\/strong><\/td>\n            <td>90% <a href=\"https:\/\/www.seamlessbio.de\/products\/human-sera-plasma-and-more\/human-serum-type-ab-male\">Human Serum AB OTC Male<\/a> or <a href=\"https:\/\/www.seamlessbio.de\/products\/human-sera-plasma-and-more\/human-serum-type-ab-male\">AB HI<\/a> + 10% DMSO<\/td>\n            <td>EMA\/410\/01 preferred \u2014 xeno-free path. Human matrix prevents xenogenic activation during banking<\/td>\n          <\/tr>\n          <tr>\n            <td><strong>Hybridoma \/ mAb-producing cells<\/strong><\/td>\n            <td>90% <a href=\"https:\/\/www.seamlessbio.de\/products\/fetal-bovine-serum\/fbs-ultra-low-igg-low-igg\">FBS Ultra Low IgG<\/a> + 10% DMSO<\/td>\n            <td>Consistent with culture medium \u2014 bovine IgG in standard FBS co-purifies with mAb. Ultra Low IgG throughout banking programme<\/td>\n          <\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n  <\/div>\n\n  <!-- Research vs GMP Table (from live page) -->\n  <div class=\"sec\">\n    <h2>Research Grade vs GMP Grade \u2014 Testing Requirements<\/h2>\n    <div class=\"tw\">\n      <table>\n        <thead><tr><th>Testing Parameter<\/th><th>Research Grade<\/th><th>GMP Grade<\/th><\/tr><\/thead>\n        <tbody>\n          <tr><td><strong>Viability (Post-Thaw)<\/strong><\/td><td>&gt;85%<\/td><td class=\"ok\">&gt;90%<\/td><\/tr>\n          <tr><td><strong>Mycoplasma Testing<\/strong><\/td><td>PCR<\/td><td class=\"ok\">PCR + Culture (28 days)<\/td><\/tr>\n          <tr><td><strong>Sterility Testing<\/strong><\/td><td>Standard (14 days)<\/td><td class=\"ok\">Extended (28 days)<\/td><\/tr>\n          <tr><td><strong>Identity Verification<\/strong><\/td><td>STR Profiling<\/td><td class=\"ok\">STR Profiling + Isoenzyme Analysis<\/td><\/tr>\n          <tr><td><strong>Adventitious Agents<\/strong><\/td><td>Not required<\/td><td class=\"ok\">Full panel (ICH Q5A)<\/td><\/tr>\n          <tr><td><strong>Documentation<\/strong><\/td><td>Certificate of Analysis<\/td><td class=\"ok\">Complete regulatory package (IND\/BLA ready)<\/td><\/tr>\n          <tr><td><strong>Turnaround Time<\/strong><\/td><td>6\u20138 weeks<\/td><td>12\u201316 weeks<\/td><\/tr>\n          <tr><td><strong>Applicable Guidelines<\/strong><\/td><td>Internal QC<\/td><td class=\"ok\">ICH Q5A, Q5D, FDA\/EMA GMP<\/td><\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n  <\/div>\n\n  <!-- FAQ -->\n  <div class=\"faq\">\n    <h2>Frequently Asked Questions<\/h2>\n    <div class=\"faq-item\">\n      <div class=\"faq-q\">How many vials should be in a master cell bank?<\/div>\n      <div class=\"faq-a\">A typical MCB contains 50\u2013100 vials. The MCB should contain enough to create multiple WCBs over the project timeline, allow for QC testing (3\u20135 vials), provide backup stocks in case of storage system failure, and support potential future applications. For GMP applications, regulatory guidelines recommend a minimum of 50 vials. We can calculate the optimal bank size based on your projected study duration and cell consumption rate.<\/div>\n    <\/div>\n    <div class=\"faq-item\">\n      <div class=\"faq-q\">What is the difference between MCB and WCB?<\/div>\n      <div class=\"faq-a\">Master Cell Bank (MCB): the original authenticated cell stock. MCB vials are used sparingly \u2014 only to create WCBs or in emergencies. Stored long-term with maximum security. Working Cell Bank (WCB): derived from the MCB at a defined passage number. Used for routine experiments and production runs. When WCB is depleted, thaw an MCB vial to create a new WCB. This two-tier system ensures original authenticated cells remain protected while providing practical stocks for daily use.<\/div>\n    <\/div>\n    <div class=\"faq-item\">\n      <div class=\"faq-q\">Why is lot reservation critical for cell banking?<\/div>\n      <div class=\"faq-a\">Cell banking is a one-time event \u2014 once an MCB is frozen in a specific cryopreservation medium, changing to a new serum lot requires a new MCB preparation and full recharacterisation. SeamlessBio holds reserved FBS and human serum lots for the full programme duration \u2014 from small-scale validation through full-scale GMP bank production. Lot reservation is available without prepayment during the evaluation phase.<\/div>\n    <\/div>\n    <div class=\"faq-item\">\n      <div class=\"faq-q\">Can rHSA replace FBS in GMP cryopreservation?<\/div>\n      <div class=\"faq-a\">Yes \u2014 rHSA Premium Grade at 4\u201310% in defined cryobase medium provides xeno-free cryoprotection for GMP cell banking. The concentration must be optimised per cell type \u2014 4% rHSA is typically sufficient for robust lines (CHO, HEK293), while iPSCs may require 8\u201310%. rHSA Premium Grade provides ISO 13485 documentation for GMP regulatory submissions. For clinical-grade iPSC banking, rHSA Premium + DMSO in DMEM\/F12 is the standard xeno-free protocol.<\/div>\n    <\/div>\n    <div class=\"faq-item\">\n      <div class=\"faq-q\">Which serum for PBMC biobanking in clinical trials?<\/div>\n      <div class=\"faq-a\">90% Human Serum AB Heat Inactivated + 10% DMSO is the standard for clinical-grade PBMC biobanking. FBS Very Low Endotoxin \u22641 EU\/mL is acceptable for research-grade PBMC banking. Both require endotoxin control \u2014 standard FBS at 10\u2013100 EU\/mL activates monocytes during freeze-thaw, reducing post-thaw functional recovery and creating cytokine background in ELISpot assays run on banked cells.<\/div>\n    <\/div>\n  <\/div>\n\n  <div class=\"related\">\n    <h3>Related Applications &amp; Products<\/h3>\n    <div class=\"rel-grid\">\n      <a href=\"https:\/\/www.seamlessbio.de\/applications\/ipsc-stem-cell-culture\">\u2192 iPSC &amp; Stem Cell Culture Guide<\/a>\n      <a href=\"https:\/\/www.seamlessbio.de\/applications\/car-t-cell-manufacturing\">\u2192 CAR-T Cell Manufacturing Guide<\/a>\n      <a href=\"https:\/\/www.seamlessbio.de\/products\/fetal-bovine-serum\/fbs-es-cell-pre-tested\">\u2192 FBS ES Cell Pre-Tested<\/a>\n      <a href=\"https:\/\/www.seamlessbio.de\/products\/albumin-proteins\/rec-human-serum-albumin-rec-hsa\/rhsa-premium-grade\">\u2192 rHSA Premium Grade<\/a>\n      <a href=\"https:\/\/www.seamlessbio.de\/products\/human-sera-plasma-and-more\/human-platelet-lysate-hpl\">\u2192 Human Platelet Lysate (hPL)<\/a>\n      <a href=\"https:\/\/www.seamlessbio.de\/products\/human-sera-plasma-and-more\/human-serum-type-ab-male\">\u2192 Human Serum AB HI<\/a>\n    <\/div>\n  <\/div>\n  <div class=\"hub-back\"><a href=\"https:\/\/www.seamlessbio.de\/applications\/\">\u2190 All Application Guides Overview<\/a><\/div>\n  <div class=\"cta\">\n    <h2>Request Cell Banking Reagent Samples &amp; Batch Reservation<\/h2>\n    <p>Free test volumes for cell banking validation. Lot reservation for MCB\/WCB campaigns. Full GMP documentation: CoA, STR profiling, ICH Q5A\/Q5D packages available.<br>Email: info@seamlessbio.de | +49 851 37932226<\/p>\n    <div class=\"ctabtns\">\n      <a href=\"mailto:info@seamlessbio.de\" class=\"ctab1\">Contact Us<\/a>\n      <a href=\"https:\/\/shop.seamlessbio.de\" class=\"ctab2\">View in Shop<\/a>\n    <\/div>\n  <\/div>\n<\/div>\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"FAQPage\",\n      \"@id\": \"https:\/\/www.seamlessbio.de\/applications\/custom-cell-banking#faqpage\",\n      \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How many vials should be in a master cell bank?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A typical MCB contains 50\u2013100 vials. 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