{"id":2948,"date":"2026-08-22T20:59:33","date_gmt":"2026-08-22T19:59:33","guid":{"rendered":"https:\/\/wheat-quail-856400.hostingersite.com\/?page_id=2948"},"modified":"2026-11-12T18:44:16","modified_gmt":"2026-11-12T17:44:16","slug":"what-is-fbs-ultra-low-igg","status":"publish","type":"page","link":"https:\/\/seamlessbio.de\/de\/what-is-fbs-ultra-low-igg\/","title":{"rendered":"Was ist FBS Ultra Low IgG?"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"2948\" class=\"elementor elementor-2948\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-99b4115 e-con e-atomic-element e-flexbox-base e-default-div e-4f0770f\" data-id=\"99b4115\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"99b4115\">\n    \t\t<div class=\"elementor-element elementor-element-7d9e3a6 elementor-widget elementor-widget-html\" data-id=\"7d9e3a6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<!-- \nWORDPRESS PAGE \u2014 GUTENBERG \"BENUTZERDEFINIERTES HTML\" BLOCK\nSlug: what-is-fbs-ultra-low-igg\nSEO Title: What is FBS Ultra Low IgG? \u2014 Definition & Uses | SeamlessBio\nMeta Description: What is FBS Ultra Low IgG, what bovine IgG level does it contain, and when is it required over Low IgG FBS for antibody production and diagnostics?\nFocus Keyword: what is FBS Ultra Low IgG\nAdditional Keywords: FBS ultra low IgG hybridoma diagnostic, fetal bovine serum less than 5 \u00b5g\/mL IgG, ultra low IgG FBS protein A purification\nMenu: Resources \u2192 Glossary\n-->\n<div style=\"background:#e9fbfa;border-left:4px solid #18b7b2;border-radius:0 8px 8px 0;padding:20px 24px;margin-bottom:32px;\">\n<p style=\"font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:#139b97;margin-bottom:8px;\">Kurzdefinition<\/p>\n<p style=\"font-size:16px;margin:0;\"><strong>Was ist FKS Ultra Low IgG?:<\/strong> FKS Ultra Low IgG ist f\u00f6tales K\u00e4lberserum, bei dem das bovine IgG auf unter 5 \u00b5g\/ml reduziert wurde \u2013 der Branchenstandard f\u00fcr die Produktion monoklonaler Antik\u00f6rper in Diagnostikqualit\u00e4t und f\u00fcr hochsensible Immunoassays, bei denen Spuren von bovinem IgG Assay-St\u00f6rungen verursachen oder die Antik\u00f6rperreinheit unter akzeptable Grenzen senken w\u00fcrden.<\/p>\n<!-- BUY BOX (SEO: links to buy pages) -->\n<div class=\"sb-buy-box\" style=\"border:1px solid #cfe9e6;background:#f4fbfa;border-radius:12px;padding:22px 26px;margin:28px auto;max-width:1200px;box-sizing:border-box\">\n<h2 style=\"font-size:22px;line-height:1.3;margin:0 0 6px\">Fetales K\u00e4lberserum (FKS) ab EU-Lager kaufen<\/h2>\n<p style=\"margin:0 0 14px\">Angebot oder Testmuster anfordern \u2013 Lager in der EU, ohne Mindestmenge, Chargenreservierung bis zu 36 Monate.<\/p>\n<ul style=\"margin:0;padding-left:20px;columns:2 300px;column-gap:32px\">\n<li style=\"margin:0 0 6px\"><a href=\"https:\/\/seamlessbio.de\/de\/produkt\/fks-low-igg\/\" style=\"font-weight:700\">FKS Ultra Low IgG (&lt;5 \u00b5g\/ml)<\/a><\/li>\n<li style=\"margin:0 0 6px\"><a href=\"https:\/\/seamlessbio.de\/de\/produkt\/fetales-kaelberserum-fks-suedamerika\/\">Fetales K\u00e4lberserum \u2013 Herkunft S\u00fcdamerika<\/a><\/li>\n<li style=\"margin:0 0 6px\"><a href=\"https:\/\/seamlessbio.de\/de\/produkt\/fetales-kaelberserum-fks-usa\/\">Fetales K\u00e4lberserum \u2013 Herkunft USA<\/a><\/li>\n<li style=\"margin:0 0 6px\"><a href=\"https:\/\/seamlessbio.de\/de\/produkt\/fetales-kaelberserum-fks-australien\/\">Fetales K\u00e4lberserum \u2013 Herkunft Australien<\/a><\/li>\n<li style=\"margin:0 0 6px\"><a href=\"https:\/\/seamlessbio.de\/de\/produkt\/fks-tetrazyklinfrei-tet-free\/\">Tetrazyklinfreies FKS (Tet-free)<\/a><\/li>\n<li style=\"margin:0 0 6px\"><a href=\"https:\/\/seamlessbio.de\/de\/produkt\/fks-hitzeinaktiviert-usa-australien-suedamerika\/\">FKS hitzeinaktiviert<\/a><\/li>\n<li style=\"margin:0 0 6px\"><a href=\"https:\/\/seamlessbio.de\/de\/produkt\/fks-es-zell-getestet-suedamerika\/\">ES-Zell-getestetes FKS<\/a><\/li>\n<li style=\"margin:0 0 6px\"><a href=\"https:\/\/seamlessbio.de\/de\/produkt\/fks-low-endotoxin-suedamerika\/\">FBS Geringer Endotoxingehalt (&lt;1 EU\/ml)<\/a><\/li>\n<li style=\"margin:0 0 6px\"><a href=\"https:\/\/seamlessbio.de\/de\/produkt\/fks-maennlich-testosteron-definiert\/\">FKS m\u00e4nnlich \u2013 Testosteron-definiert<\/a><\/li>\n\n<\/ul>\n<p style=\"margin:14px 0 0\"><a href=\"https:\/\/seamlessbio.de\/de\/request-quote\/\" style=\"font-weight:600\">Angebot anfordern \u2192<\/a><\/p>\n<\/div>\n<!-- \/BUY BOX -->\n\n<\/div>\n<h2>Wann ist Ultra Low IgG statt Low-IgG-FKS erforderlich?<\/h2>\n<p>FKS Low IgG (&lt;200 \u00b5g\/ml) reicht f\u00fcr die meisten Forschungsanwendungen, bei denen die mAb-Reinheit nach Protein A &gt;85 % betr\u00e4gt. FKS Ultra Low IgG (&lt;5 \u00b5g\/ml) ist erforderlich, wenn der mAb als diagnostischer Antik\u00f6rper dient und Kreuzreaktivit\u00e4t mit bovinem IgG falsch-positive Ergebnisse erzeugt; wenn Einreichungen nach EU-IVDR oder FDA 510(k) den Nachweis fehlender IgG-St\u00f6rung verlangen; wenn das Hybridom &lt;10 \u00b5g\/ml mAb produziert; oder in der Forschung an therapeutischen Antik\u00f6rpern, bei der xenogene Proteinkontamination minimiert werden muss.<\/p>\n<h2>Wichtige Fakten<\/h2>\n<ul>\n<li>FKS Ultra Low IgG: &lt;5 \u00b5g\/ml bovines IgG \u2013 per ELISA oder RID je Charge best\u00e4tigt<\/li>\n<li>Standard FBS: 50\u2013200 \u00b5g\/mL bovine IgG \u2014 at least 10\u201340\u00d7 more than Ultra Low IgG<\/li>\n<li>Entspricht der branchen\u00fcblichen Ultra-Low-IgG-Spezifikation von &lt;5 \u00b5g\/ml<\/li>\n<li>In Hybridom-Produktionsmedium mit 10\u201315 % eingesetzt \u2013 gleiche Konzentration wie Standard-FKS<\/li>\n<li>Ein einziger Protein-A-Schritt nach Kultur mit Ultra Low IgG ergibt typischerweise &gt;95 % reines murines IgG<\/li>\n<li>F\u00fcr Fusions- und Klonierungsphasen nicht erforderlich \u2013 bis zum Produktionsma\u00dfstab Standard-FKS verwenden<\/li>\n<\/ul>\n<h2>Weiterlesen<\/h2>\n<ul>\n<li><a href=\"https:\/\/seamlessbio.de\/de\/what-is-fbs-low-igg\/\">Was ist geringes IgG FBS?<\/a><\/li>\n<li><a href=\"https:\/\/seamlessbio.de\/de\/what-is-fbs\/\">Was ist FBS?<\/a><\/li>\n<li><a href=\"https:\/\/seamlessbio.de\/de\/anwendungen\/hybridoma-monoclonal-antibody-production\/\">Leitfaden Hybridom- &amp; mAb-Produktion<\/a><\/li>\n<\/ul>\n<div style=\"background:#f4f6f7;border-radius:12px;padding:32px;text-align:center;margin-top:40px;\">\n<p style=\"font-size:18px;font-weight:700;color:#1a2e35;margin-bottom:12px;\">FKS Ultra Low IgG (&lt;5 \u00b5g\/ml) \u2013 erh\u00e4ltlich bei SeamlessBio<\/p>\n<a href=\"https:\/\/seamlessbio.de\/de\/produkte\/fks-ultra-low-igg\/\" style=\"background:#18b7b2;color:#fff;padding:12px 28px;border-radius:50px;font-size:13px;font-weight:700;text-decoration:none;\">Zum Produkt \u2192<\/a>\n&nbsp;&nbsp;\n<a href=\"https:\/\/seamlessbio.de\/de\/kontakt\/\" style=\"border:2px solid #18b7b2;color:#139b97;padding:10px 28px;border-radius:50px;font-size:13px;font-weight:700;text-decoration:none;\">Muster anfordern<\/a>\n<\/div>\n<p style=\"font-size:13px;color:#6b7f82;margin-top:32px;border-top:1px solid #d8e8e7;padding-top:16px;\">\n<em>SeamlessBio \u00b7 Passau, Deutschland \u00b7 <a href=\"mailto:info@seamlessbio.de\">info@seamlessbio.de<\/a><\/em>\n<\/p>\t\t\t\t<\/div>\n\t\t\n<\/div>\n\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Quick Definition What is FBS Ultra Low IgG?: FBS Ultra Low IgG is fetal bovine serum processed to reduce bovine IgG to less than 5 \u00b5g\/mL \u2014 the industry standard for diagnostic-grade monoclonal antibody production and high-sensitivity immunoassay development where trace bovine IgG contamination would cause assay interference or reduce antibody purity below acceptable limits. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_templately_pack_id":"","_templately_imported_at":"","_templately_source":"","_templately_import_session_id":"","footnotes":""},"class_list":["post-2948","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is FBS Ultra Low IgG? \u2014 Definition &amp; Uses | SeamlessBio<\/title>\n<meta name=\"description\" content=\"What is FBS Ultra Low IgG, what bovine IgG level does it contain, and when is it required over Low IgG FBS for antibody production and diagnostics?\" \/>\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\/what-is-fbs-ultra-low-igg\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is FBS Ultra Low IgG? \u2014 Definition &amp; Uses | SeamlessBio\" \/>\n<meta property=\"og:description\" content=\"What is FBS Ultra Low IgG, what bovine IgG level does it contain, and when is it required over Low IgG FBS for antibody production and diagnostics?\" \/>\n<meta property=\"og:url\" content=\"https:\/\/seamlessbio.de\/de\/what-is-fbs-ultra-low-igg\/\" \/>\n<meta property=\"og:site_name\" content=\"SeamlessBio\" \/>\n<meta property=\"article:modified_time\" content=\"2026-11-12T17:44:16+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/seamlessbio.de\/wp-content\/uploads\/2026\/04\/134428046.png\" \/>\n\t<meta property=\"og:image:width\" content=\"973\" \/>\n\t<meta property=\"og:image:height\" content=\"288\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Gesch\u00e4tzte Lesezeit\" \/>\n\t<meta name=\"twitter:data1\" content=\"1\u00a0Minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/seamlessbio.de\\\/what-is-fbs-ultra-low-igg\\\/\",\"url\":\"https:\\\/\\\/seamlessbio.de\\\/what-is-fbs-ultra-low-igg\\\/\",\"name\":\"What is FBS Ultra Low IgG? \u2014 Definition & Uses | SeamlessBio\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/seamlessbio.de\\\/#website\"},\"datePublished\":\"2026-08-22T19:59:33+00:00\",\"dateModified\":\"2026-11-12T17:44:16+00:00\",\"description\":\"What is FBS Ultra Low IgG, what bovine IgG level does it contain, and when is it required over Low IgG FBS for antibody production and diagnostics?\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/seamlessbio.de\\\/what-is-fbs-ultra-low-igg\\\/#breadcrumb\"},\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/seamlessbio.de\\\/what-is-fbs-ultra-low-igg\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/seamlessbio.de\\\/what-is-fbs-ultra-low-igg\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Start\",\"item\":\"https:\\\/\\\/seamlessbio.de\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"What is FBS Ultra Low IgG?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/seamlessbio.de\\\/#website\",\"url\":\"https:\\\/\\\/seamlessbio.de\\\/\",\"name\":\"SeamlessBio\",\"description\":\"Human serum, plasma and hPL, single-use bioprocessing bags, serum-free media, animal sera and FBS. 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