ISO 21043-3-2025 PDF

Full title and description

St ISO 21043-3-2025 — Forensic sciences — Part 3: Analysis. This International Standard specifies requirements and provides recommendations to safeguard the process for the analysis of items of potential forensic value, including selection and application of suitable analytical methods to meet customer needs and fulfil requests. It is intended for activities performed by forensic service providers both at the scene and within facilities; it is applicable across forensic disciplines but excludes recovery of digital data (see ISO/IEC 27037).

Abstract

ISO 21043-3:2025 sets out requirements and recommendations to ensure suitable methods, proper controls, qualified personnel and appropriate analytical strategies are used during forensic analysis of items. The objective is to facilitate comprehensive, accurate and reliable analysis while meeting the needs of the customer and preserving evidentiary value. The document clarifies applicability (scene and laboratory activities) and explicitly excludes digital-data recovery.

General information

• Status: Published (International Standard).
• Publication date: June 2025 (ISO edition published 2025-06).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 07.140 (Forensic science).
• Edition / version: Edition 1, 2025.
• Number of pages: 12 (ISO official edition); national/adopted EN or national versions may have different pagination.

These bibliographic and status details are taken from the ISO record and corroborated by standards registries and national adoption notices.

Scope

Defines requirements and recommendations for the analysis phase of the forensic process: selection and application of suitable analytical methods, implementation of controls and quality measures, personnel competence, and analytical strategies to deliver reliable results that meet the customer's request. Applicable to forensic activities at the scene and in facilities across forensic disciplines, except for digital-data recovery which is excluded.

Key topics and requirements

• Selection and justification of suitable analytical method(s) to meet the request and the needs of the customer.
• Requirements and recommendations for controls, validation and quality assurance during analysis.
• Competence, training and qualification expectations for personnel performing analyses.
• Analytical strategy and documentation to ensure reproducibility, traceability and evidentiary integrity.
• Application across forensic disciplines and settings (scene and laboratory); explicit exclusion of digital-data recovery (ISO/IEC 27037 covers that domain).

These topics reflect the standard’s emphasis on method suitability, controls, personnel competence and documentation to support reliable forensic analysis.

Typical use and users

Primary users are forensic service providers: crime laboratory managers and analysts (chemistry, biology, toxicology, trace evidence, impressions, etc.), forensic unit supervisors, quality managers, accreditation assessors, and law-enforcement agencies involved in evidence analysis. The standard is also used by policy-makers, procurers of forensic services, and educators developing training curricula. In the United States some national bodies (for example NIST) have distributed copies to eligible public forensic laboratories to support implementation.

Related standards

ISO 21043-3 is part of the ISO 21043 series for forensic sciences. Closely related documents include: Part 1 — Vocabulary (ISO 21043-1), Part 2 — Recognition, recording, collecting, transport and storage of items (ISO 21043-2), Part 4 — Interpretation, Part 5 — Reporting. For digital evidence recovery and handling, see ISO/IEC 27037. Implementers should consult the other parts in the series for consistent terminology and end-to-end forensic process requirements.

Keywords

forensic analysis; analytical methods; validation; quality assurance; competence; traceability; evidence integrity; scene to laboratory; forensic science; ISO 21043 series.

FAQ

Q: What is this standard?

A: ISO 21043-3:2025 is an International Standard titled "Forensic sciences — Part 3: Analysis" that specifies requirements and recommendations for the analysis phase of forensic work.

Q: What does it cover?

A: It covers selection and application of suitable analytical methods, controls and quality measures, personnel competence, and analytical strategies to ensure reliable, documented forensic analyses performed at the scene or in facilities. It does not cover digital-data recovery.

Q: Who typically uses it?

A: Forensic laboratory analysts and managers, crime-scene practitioners, accreditation and quality personnel, law-enforcement forensic units, medical examiners/coroners, and organizations that procure or regulate forensic services.

Q: Is it current or superseded?

A: Current — published as an ISO International Standard in June 2025 (first edition). Implementers should confirm they hold the published 2025 edition for compliance.

Q: Is it part of a series?

A: Yes — it is Part 3 of the ISO 21043 series. The series includes Parts 1 (vocabulary), 2 (recognition/collection/storage), 4 (interpretation) and 5 (reporting). Users are advised to reference the other parts for a complete forensic process framework.

Q: What are the key keywords?

A: Forensic analysis, analytical methods, validation, quality assurance, evidence integrity, competence, traceability, ISO 21043.