ISO 21569-2005 PDF

Full title and description

Foodstuffs — Methods of analysis for the detection of genetically modified organisms and derived products — Qualitative nucleic acid based methods (ISO 21569:2005). This International Standard specifies horizontal, PCR‑based procedures and general requirements for the qualitative detection and confirmation of target nucleic acid (DNA) sequences from genetically modified organisms (GMOs) in food matrices; it can also be applied to feed and environmental plant samples.

Abstract

ISO 21569:2005 defines a harmonized approach for detecting the presence (qualitative determination) of GMO material by analysing extracted nucleic acids, with emphasis on polymerase chain reaction (PCR) amplification, identification of specific target sequences and confirmation of amplified products. The standard sets out minimum requirements, controls and performance criteria intended to produce comparable, accurate and reproducible results between laboratories; example methods are provided in annexes.

General information

• Status: Published (International Standard; maintained and amended by ISO/TC 34/SC 16).
• Publication date: 2005-06 (Edition 1, published June 2005).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 67.050 — General methods of tests and analysis for food products.
• Edition / version: Edition 1 (2005); amended by ISO 21569:2005/Amd 1:2013.
• Number of pages: 69 (original ISO 21569:2005 text — amendment document and national translations add pages; combined documents such as the amended publication are longer).

Scope

Specifies horizontal qualitative nucleic acid based methods for detecting GMOs and derived products in foodstuffs and related matrices. The scope covers requirements for sample handling, nucleic acid extraction (general), choice and design of PCR assays for target sequences, use of positive/negative and inhibition controls, criteria for accepting test runs and for confirming the identity of amplified products (e.g., by sequencing or other orthogonal confirmation). The standard is intended for screening and confirmation workflows rather than quantitative measurement of GMO content.

Key topics and requirements

• General laboratory and reagent requirements for nucleic acid‑based analysis (contamination control, equipment, personnel competence).
• Recommended procedures for sample processing and obtaining amplifiable DNA suitable for PCR.
• Guidance on assay design and selection (target sequences, primers/probes) for specific and construct‑ or event‑based detection.
• Mandatory use of controls (positive, negative, inhibition) and criteria for accepting/rejecting results.
• Performance criteria and validation principles to ensure comparability and reproducibility between laboratories.
• Requirements for confirming identity of PCR products and for standardized reporting of positive/negative/ambiguous findings.
• Annexed example methods and references to related technical specifications (real‑time PCR screening methods and event‑specific procedures).

Typical use and users

Used by food and feed testing laboratories, official control/regulatory laboratories, third‑party testing providers, food industry QC/R&D teams, seed testing and environmental laboratories and method developers who require a harmonized qualitative framework for GMO screening and confirmation. The standard supports compliance testing, routine screening and method development/validation activities.

Related standards

Part of a family of horizontal methods for molecular biomarker analysis. Closely related documents include ISO 21570 (quantitative nucleic acid based methods), ISO 21571 (nucleic acid extraction and preparatory steps), ISO 24276 (general requirements and definitions for GMO detection methods) and multiple ISO/TS parts and technical documents that give real‑time PCR screening or event‑specific procedures (examples: ISO/TS 21569‑5, ‑6, ‑7 and other parts in the 21569 series). A revision/replacement (ISO/DIS 21569‑1 / horizontal methods series rework) has been under development.

Keywords

GMO detection, qualitative PCR, nucleic acid based methods, food testing, molecular biomarker analysis, ISO 21569, screening and confirmation, PCR controls, method validation.

FAQ

Q: What is this standard?

A: ISO 21569:2005 is an international horizontal standard that specifies qualitative nucleic acid‑based methods (primarily PCR) for detecting genetically modified organisms and derived products in food and related matrices.

Q: What does it cover?

A: It covers laboratory requirements, sample and nucleic acid handling, assay selection and design, required controls, minimum performance and validation criteria, procedures for confirming identity of PCR amplicons and recommendations for reporting results. Annexes include example methods.

Q: Who typically uses it?

A: Food/feed testing labs, official control/regulatory laboratories, industry QC and R&D groups, seed and environmental testing labs, and method developers implementing or validating qualitative GMO detection workflows.

Q: Is it current or superseded?

A: The published edition is ISO 21569:2005 (with Amendment 1:2013). ISO has indicated review and work to revise the horizontal GMO methods family; a draft/replacement standard (ISO/DIS 21569‑1) has been prepared to restructure the series. Users should check the national or ISO catalogue for the very latest publication status before relying on a single version for regulatory compliance.

Q: Is it part of a series?

A: Yes — it belongs to a family of horizontal methods for molecular biomarker analysis addressing GMO detection (qualitative, quantitative, extraction and technical specifications). Related items include ISO 21570, ISO 21571, ISO 24276 and multiple ISO/TS parts that provide real‑time PCR screening and event‑specific methods.

Q: What are the key keywords?

A: GMO detection; qualitative PCR; nucleic acid analysis; food analysis; screening and confirmation; PCR controls; method validation; ISO 21569.