Guide: How Forensic Advantage Supports ISO/IEC 17025, ISO/IEC 17020, Chain-of-Custody Compliance & Audit Preparation

A Comprehensive Reference for Forensic Laboratory Quality Professionals

Introduction

Accreditation is not a checkbox. It is the foundation of a forensic laboratory's credibility. As the forensic science field evolves, maintaining credibility in the courtroom and in public trust demands adherence to rigorous quality standards. For forensic testing CABs (Conformity Assessment Bodies), ISO/IEC 17025 is the benchmark that provides the framework for ensuring technical competence, consistency in lab processes, and the validity of results.

This guide explains how Forensic Advantage's Crime Lab LIMS directly supports the requirements of both ISO/IEC 17025 and ISO/IEC 17020, provides an unbroken chain-of-custody framework, and simplifies the audit preparation process.

Part 1: Understanding the Standards for LIMS Audit Requirements

ISO/IEC 17025:2017 - Testing and Calibration Laboratories

ISO/IEC 17025:2017 is the accreditation standard for testing laboratories. It includes requirements common to many ISO standards for management system documentation, document and records control, internal audits, and management reviews. Because ISO/IEC 17025 is specific to testing, the standard also addresses the technical capabilities of the laboratory, including measurement traceability, equipment calibration and maintenance, staff competence, and reporting.

Key requirement areas relevant to LIMS:

ISO/IEC 17025 Clause	Requirement Area	How FA Addresses It
4.1 – Impartiality	Lab must identify and manage risks to impartiality	FA's role-based access controls and audit trails prevent unauthorized modifications and ensure transparent case assignment
4.2 – Confidentiality	Protection of confidential information	FA enforces data access controls, encrypted storage, and AuthXAccess for secure external user management
6.2 – Personnel	Staff competence, training, and supervision	Resource Manager tracks training records, competency assessments, certification dates, and recertification deadlines for every staff member
6.3 – Facilities & Environmental Conditions	Suitable environmental conditions for lab activities	Resource Manager can log environmental monitoring data alongside equipment records
6.4 – Equipment	Calibration, maintenance, and performance verification	Resource Manager tracks equipment schedules, certification records, calibration due dates, maintenance history, and compliance status
6.5 – Metrological Traceability	Traceability of measurement results to SI units	FA tracks reference standards and calibration data linked to specific analyses
6.6 – Externally Provided Products & Services	Control of outsourced services	FA supports external lab referrals with tracked requests and result imports
7.1 – Review of Requests, Tenders, and Contracts	Review of customer requirements	Pre-Log and FA Web capture submission details and requirements from law enforcement agencies at the point of evidence submission
7.2 – Selection, Verification, and Validation of Methods	Method validation and documentation	FA's configurable workflow engine ties specific analytical methods to case types and disciplines, with version-controlled SOPs accessible within the system
7.3 – Sampling	Proper sampling procedures and records	FA OnScene captures sampling data in the field with GPS, photos, and investigator notes, syncing to the LIMS
7.4 – Handling of Test Items	Unique identification, handling, transport, storage	FA's chain-of-custody engine provides continuous, timestamped tracking of every transfer, examination, storage, and release event
7.5 – Technical Records	Complete records sufficient to establish audit trail	Every action in FA generates an immutable, time-stamped audit trail entry
7.7 – Ensuring Validity of Results	QC procedures, proficiency testing, inter-lab comparisons	FA supports QC sample tracking, control charts, and proficiency test result logging
7.8 – Reporting of Results	Accurate, clear, and unambiguous reports	FA's DocGen engine produces configurable, court-ready reports with multi-level review and approval workflows, draft watermarking, and electronic signature capture
8.2 – Management System Documentation	Documented quality management system	FA serves as the centralized repository for all quality documents, SOPs, and forms with version control
8.3 – Control of Management System Documents	Document control with version management	FA's document management module ensures only current versions are accessible and maintains a full history of revisions
8.5 – Actions to Address Risks and Opportunities	Proactive risk management	FA's audit trail and exception reporting identify anomalies and potential risks in real time
8.7 – Corrective Actions	Identification and resolution of nonconformities	FA can track corrective action requests (CARs) tied to specific cases, personnel, or equipment
8.8 – Internal Audits	Regular internal audit program	FA's comprehensive audit trails, equipment records, and training logs provide readily accessible documentation for internal audit review
8.9 – Management Reviews	Periodic review of the management system	FA's reporting tools generate management summary data on case throughput, turnaround times, personnel workloads, and quality metrics

ISO/IEC 17020:2012 - Requirements for Inspection Bodies

Currently, ISO/IEC 17025 is the most common accreditation standard that forensic organizations choose to comply with, but ISO/IEC 17020 is also an option depending on what disciplines are performed. Each standard is unique and meant for a specific purpose, but it will ultimately be up to the organization to determine whether ISO/IEC 17025 or ISO/IEC 17020 is better suited for their disciplines or if both standards should be utilized.

If an organization is performing an examination of an item and highly skilled, knowledgeable experts are needed to perform professional judgments as part of the examination and reporting, ISO/IEC 17020 may be the more appropriate standard. Example disciplines that could benefit from this standard are crime scene investigation and digital forensics.

How FA Supports ISO/IEC 17020 Disciplines:

ISO/IEC 17020 Area	Relevant FA Capability
Inspector Competence & Training	Resource Manager tracks continuing education, professional judgment assessments, and witnessing records for inspectors/examiners
Inspection Methods & Procedures	Configurable workflows capture the professional judgment process with structured data entry and narrative fields
Inspection Records	FA generates complete, timestamped records of every inspection activity, including crime scene investigations and digital forensic examinations
Inspection Reports	DocGen produces discipline-specific reports that capture both objective findings and professional judgment conclusions
Field Operations (Crime Scene)	FA OnScene supports field-based evidence collection, scene documentation, and real-time data sync to the LIMS — directly supporting ISO/IEC 17020 requirements for sampling and scene inspection
Digital Forensics	FA supports digital forensic case types with configurable workflows for device examination, data extraction, and reporting

Part 2: Chain-of-Custody Compliance

Chain-of-custody is not a feature in Forensic Advantage, it is a core architectural principle. The platform combines robust chain-of-custody, configurable workflows, and real-time data integration to support your lab's pursuit of accuracy and accountability.

How FA Ensures Unbroken Chain-of-Custody:

Chain-of-Custody Requirement	FA Implementation
Evidence Receipt & Logging	Pre-Log and FA Web enable law enforcement to submit evidence electronically with required descriptors, creating the initial custody record before the evidence physically arrives at the lab
Unique Identification	Every evidence item receives a system-generated unique identifier; barcode/QR code labels are generated for physical tracking
Transfer Tracking	Every transfer between persons, locations, storage areas, or examination stations is recorded with timestamp, user identity, and reason
Sub-item & Aliquot Tracking	Parent-child evidence relationships maintain custody chains through sub-sampling, aliquotting, and recombination
Storage Location Management	FA tracks evidence location down to building, room, shelf, and position — with transfer records for every movement
Examination Records	When an examiner opens and examines evidence, the system records the seal-breaking event, examination activities, and re-sealing
Release & Disposal	Evidence release to agencies, court, or for destruction is tracked with required authorization and documentation
Immutable Audit Trail	FA's LIMS automatically tracks every activity in the system with time-stamped entries, eliminating gaps in documentation and simplifying audits.
Courtroom Defensibility	The complete, unbroken custody record can be printed or exported as a court-ready document for any evidence item at any time

Part 3: Audit Preparation - How FA Simplifies the Process

Before FA: Quality managers spend weeks assembling documentation, chasing training records, verifying calibration logs, and compiling case statistics for assessors.

With FA: The information assessors need is already organized, current, and accessible within the system.

Audit Preparation Workflow with FA:

Audit Preparation Task	Without FA	With FA
Compile personnel training records	Manual search through paper files and spreadsheets	Resource Manager generates current training status reports for all personnel in seconds
Verify equipment calibration status	Check paper logs or separate spreadsheets for each instrument	The Resource Manager tracks equipment calibration, maintenance schedules, expiration dates, and reagent usage, ensuring nothing falls out of compliance.
Demonstrate chain-of-custody integrity	Reconstruct custody history from paper forms and sign-out logs	Pull complete custody history for any item with one query
Show audit trail for specific cases	Compile records from multiple sources	System-generated, immutable audit trail available instantly for any case
Provide case throughput statistics	Manual counting and spreadsheet analysis	Real-time dashboard and reporting tools generate case volume, TAT, and workload metrics
Document control verification	Check paper or shared drive for current SOP versions	Version-controlled documents within the system with distribution acknowledgment tracking
Demonstrate proficiency test management	Search files for PT records	PT results logged within analyst records and linked to applicable disciplines
Evidence of corrective action completion	Search email and paper files	Corrective actions tracked within the system with status, responsible party, and completion documentation

Assessor-Ready Reports FA Can Generate:

• Personnel competency and training summary by analyst

• Equipment calibration and maintenance status report

• Case throughput and turnaround time report by discipline

• Chain-of-custody audit report for any evidence item

• Complete audit trail for any case, evidence item, or user

• QC/proficiency testing summary

• Corrective action log with status

Conclusion

While the requirements of ISO/IEC 17025 are extensive, forensic CABs don't have to face them alone. Forensic Advantage is designed to make compliance a natural outcome of your daily work, not an extra burden layered on top of it. When your LIMS is built by people who understand accreditation from the inside, compliance becomes part of the workflow, not a separate project.

Ready to see how Forensic Advantage supports your accreditation needs? Contact us!