{"id":1740457,"date":"2025-09-08T17:33:05","date_gmt":"2025-09-08T12:03:05","guid":{"rendered":"https:\/\/pharmint.net\/?post_type=encyclopedia&#038;p=1740457"},"modified":"2025-09-09T12:52:03","modified_gmt":"2025-09-09T07:22:03","slug":"lot-number","status":"publish","type":"encyclopedia","link":"https:\/\/pharmint.net\/ar\/glossary\/lot-number\/","title":{"rendered":"Lot Number"},"content":{"rendered":"<h2><a href=\"https:\/\/pharmint.net\/glossary\/lot-number\/\"><strong>What Is a Lot Number in Pharmaceutical Manufacturing?<\/strong><\/a><\/h2>\n<p>A&nbsp;<strong>lot number<\/strong>&mdash;alternatively known as a control or batch number&mdash;is defined under&nbsp;<a href=\"https:\/\/www.ecfr.gov\/current\/title-21\/chapter-I\/subchapter-C\/part-210\/section-210.3\" target=\"_blank\" rel=\"noopener\"><strong>21 CFR 210.3<\/strong><\/a>&nbsp;as&nbsp;<em>&ldquo;any distinctive combination of letters, numbers, or symbols&hellip; from which the complete history of the manufacture, processing, packing, holding, and distribution of a batch or lot of drug product or other material can be determined.&rdquo;<\/em><\/p>\n<h2><strong>Why Does a Lot Number Matter in Pharma?<\/strong><\/h2>\n<ul>\n<li><strong>Traceability &amp; Recall Readiness<\/strong>: Enables pinpointing affected lots and conducting focused recalls.<\/li>\n<li><strong>Regulatory &amp; Quality Compliance<\/strong>: As per&nbsp;<strong>21 CFR 201.18<\/strong>, &ldquo;the lot number on the label of a drug should be capable of yielding the complete manufacturing history of the package.&rdquo; An incorrect lot number may render the product misbranded.<\/li>\n<\/ul>\n<h2><strong>How Is a Lot Number Structured and Used?<\/strong><\/h2>\n<ul>\n<li>While the&nbsp;<strong>CFR<\/strong>&nbsp;does not prescribe specific formatting, companies commonly use serial schemes&mdash;including letters, dates, production codes&mdash;and adopt&nbsp;<strong>GS1&#8209;128<\/strong>&nbsp;barcodes for scan readability.<\/li>\n<li>Lot numbers are required on&nbsp;<strong>primary or secondary packaging<\/strong>, positioned near the expiration date and NDC for regulatory visibility.<\/li>\n<\/ul>\n<h2><strong>Where Are Lot Numbers Commonly Applied?<\/strong><\/h2>\n<p>They are mandatory for materials and products, including:<\/p>\n<ul>\n<li><a href=\"https:\/\/pharmint.net\/what-is-active-pharmaceutical-ingredient-api\/\"><strong>APIs<\/strong><\/a><strong>,&nbsp;<\/strong><a href=\"https:\/\/pharmint.net\/glossary\/pharmaceutical-intermediate\/\"><strong>pharmaceutical intermediates<\/strong><\/a><strong>,&nbsp;<\/strong><a href=\"https:\/\/pharmint.net\/glossary\/bulk-drug-substance\/\"><strong>bulk drug substances<\/strong><strong><br>\n<\/strong><\/a><\/li>\n<li>Incoming&nbsp;<a href=\"https:\/\/pharmint.net\/glossary\/raw-material\/\"><strong>raw materials<\/strong><strong><br>\n<\/strong><\/a><\/li>\n<li>Supporting documentation in&nbsp;<a href=\"https:\/\/pharmint.net\/glossary\/dmf-drug-master-file\/\"><strong>DMFs<\/strong><strong><br>\n<\/strong><\/a><\/li>\n<li>Ensuring&nbsp;<a href=\"https:\/\/pharmint.net\/glossary\/good-manufacturing-practice-gmp\/\"><strong>GMP<\/strong><\/a>, label integrity, and regulatory compliance<\/li>\n<\/ul>\n<p>While practical and widely used, these application examples align with GMP expectations and labeling norms, though they aren&rsquo;t directly cited in the regulations listed above.<\/p>\n<h2><strong>Lot Number vs. Batch Number<\/strong><\/h2>\n<p>According to&nbsp;<strong>21 CFR 210.3<\/strong>, a&nbsp;<strong>lot<\/strong>&nbsp;refers to a batch or a time\/quantity-defined portion in continuous processes, each with uniform quality.<br>\nCommon industry parlance treats &ldquo;lot number&rdquo; and &ldquo;batch number&rdquo; interchangeably, though some firms distinguish them for internal tracking or regulatory nuances.<\/p>\n<h2><strong>Related Terms and Concepts<\/strong><\/h2>\n<ul>\n<li><a href=\"https:\/\/pharmint.net\/glossary\/current-good-manufacturing-practice-cgmp\/\"><strong>Batch Number<\/strong><\/a>&nbsp;&ndash; Often used interchangeably with lot number, but may refer specifically to a single manufacturing run<\/li>\n<li><a href=\"https:\/\/pharmint.net\/glossary\/certificate-of-analysis-coa\/\"><strong>Certificate of Analysis (CoA)<\/strong><\/a>&nbsp;&ndash; Includes lot-specific test results used to verify product quality<\/li>\n<li><a href=\"https:\/\/pharmint.net\/glossary\/audit-trail\/\"><strong>Audit Trail<\/strong><\/a>&nbsp;&ndash; Digital or paper-based logs linking actions to a specific lot for traceability<\/li>\n<li><a href=\"https:\/\/pharmint.net\/glossary\/raw-material\/\"><strong>Raw Material<\/strong><\/a>&nbsp;&ndash; Every incoming <a href=\"https:\/\/pharmint.net\/ar\/glossary\/raw-material\/\" target=\"_self\" title=\"What Is a Raw Material in Pharmaceutical Manufacturing? A&nbsp;raw material&nbsp;in the pharmaceutical industry refers to any unprocessed or minimally processed substance used at the beginning of a synthesis or formulation process. These materials include solvents, reagents, minerals, plant extracts, and basic chemicals that transform the manufacture of pharmaceutical intermediates, APIs, or excipients. Why Are Raw&hellip;\" class=\"encyclopedia\">raw material<\/a> must be assigned a lot number upon receipt<\/li>\n<li><a href=\"https:\/\/pharmint.net\/glossary\/dmf-drug-master-file\/\"><strong>DMF (Drug Master File)<\/strong><\/a>&nbsp;&ndash; May reference specific lot numbers of materials used in formulation<\/li>\n<li><a href=\"https:\/\/pharmint.net\/glossary\/sds-safety-data-sheet\/\"><strong>SDS (Safety Data Sheet)<\/strong><\/a>&nbsp;&ndash; Must correlate with the correct lot number for accurate hazard and handling details<\/li>\n<li><a href=\"https:\/\/pharmint.net\/glossary\/controlled-substance\/\"><strong>Controlled Substance<\/strong><\/a>&nbsp;&ndash; Lot tracking is essential for compliance with the&nbsp;<a href=\"https:\/\/pharmint.net\/glossary\/controlled-substances-act-csa\/\"><strong>CSA<\/strong><strong><br>\n<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/pharmint.net\/glossary\/ich-guidelines\/\"><strong>ICH Guidelines<\/strong><\/a>&nbsp;&ndash; Recommend traceability frameworks in clinical and manufacturing settings<\/li>\n<li><a href=\"https:\/\/pharmint.net\/glossary\/us-fda-registered-facility\/\"><strong>US FDA-Registered Facility<\/strong><\/a>&nbsp;&ndash; Expected to follow lot-level tracking per GMP and labeling rules<\/li>\n<li><a href=\"https:\/\/pharmint.net\/glossary\/material-safety-data-sheet-msds\/\"><strong>Material Safety Data Sheet (MSDS)<\/strong><\/a>&nbsp;&ndash; Lot-specific MSDS may be required for shipment and customs<\/li>\n<\/ul>\n<h2><strong>Lot Numbers FAQs<\/strong><\/h2>\n<p><strong>What&rsquo;s the difference between a lot number and a serial number?<\/strong><strong><br>\n<\/strong>A lot number tracks a production group, while a serial number uniquely identifies a single unit.<\/p>\n<p><strong>Are lot numbers required on pharmaceutical labels?<\/strong><strong><br>\n<\/strong>Yes&mdash;mandated under&nbsp;<strong>21 CFR 201.18<\/strong>&nbsp;for drug labels to link to production history.<\/p>\n<p><strong>How are lot numbers used during recalls?<\/strong><strong><br>\n<\/strong>They enable swift identification and targeted removal of impacted products.<\/p>\n<p><strong>Do lot numbers include production date information?<\/strong><strong><br>\n<\/strong>They often do, as embedded codes, though the format varies by organization.<\/p>\n<p><strong>What happens if a lot number is misprinted?<\/strong><strong><br>\n<\/strong>It compromises traceability and recalls, leading to potential regulatory non-compliance and misbranding issues.<\/p>\n","protected":false},"author":7806,"template":"","meta":{"rank_math_lock_modified_date":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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