ISO 15189 Accreditation for Respiratory and Sleep Labs: What the Standard Actually Requires in 2026
ISO 15189 is the international standard that specifies quality and competence requirements for medical laboratories [1]. For respiratory and sleep labs in Australia and the UK, achieving accreditation against this standard is not just a regulatory checkbox. It is a structured framework that governs how labs manage documents, train staff, handle non-conformances, and maintain quality control. Understanding what the standard actually demands, and where labs most commonly fall short, is the difference between a smooth accreditation cycle and a costly remediation process.
TL;DR
ISO 15189 sets the global benchmark for quality and competence in medical laboratories, including respiratory and sleep labs [2]
The standard covers document control, staff competency, quality control, audits, and non-conformance management
Pulmonary function lab accreditation in Australia is assessed by NATA against ISO 15189 requirements [1]
A laboratory quality management system that is purpose-built for respiratory workflows significantly reduces the administrative burden of compliance
Cloud-based lab management software can centralise accreditation evidence in one place, making audits faster and less stressful
About the Author: This article was written by the Rezibase team, a group of respiratory scientists and healthcare technology specialists with over 37 years of combined experience building and supporting respiratory and sleep laboratory systems across Australia, New Zealand, the UK, and Ireland.
What Exactly Is ISO 15189 and Why Does It Apply to Respiratory Labs?
ISO 15189 is an internationally recognised standard that specifies requirements for quality and competence in medical laboratory environments [3]. It is based on ISO 9001 and ISO/IEC 17025 principles but is specifically tailored to the clinical context of patient care [4].
For respiratory and sleep laboratories, this means the standard applies directly to:
Spirometry, diffusion capacity, and lung volume testing workflows
Sleep study reporting and interpretation processes
Equipment calibration and quality control procedures
Staff training, competency assessment, and ongoing professional development
Document control and record management
Handling of complaints, incidents, and non-conformances
The 2022 revision of ISO 15189 placed renewed emphasis on risk management and process-based thinking [3], which has practical implications for how labs structure their internal audits and management reviews in 2026.
What Does ISO 15189 Actually Require from a Laboratory Quality Management System?
A laboratory quality management system under ISO 15189 is not a folder of policies. It is a living, operational framework that must demonstrate consistent implementation across every aspect of lab activity [4].
The standard organises its requirements across two primary domains:
Domain | Key Requirements |
|---|---|
Management Requirements | Document control, agreements, subcontracting, external services, complaints, non-conformance, audits, management review |
Technical Requirements | Staff competency, accommodation, equipment, pre-examination processes, examination processes, result reporting, quality control |
The areas that catch labs off guard most often include:
ISO 15189 Document Control
Every policy, procedure, and form must be version-controlled, reviewed on a defined cycle, and accessible to staff at the point of use. Outdated documents sitting in shared drives or printed binders are a common audit finding.
Quality Control
ISO 15189 quality management requires statistical quality control processes to be applied to examination procedures. In practice, this means Westgard rules or equivalent methods must be implemented, documented, and reviewed regularly, not just set up and forgotten.
Non-Conformance and Action Plans
When something goes wrong, labs must demonstrate that they identified the issue, investigated the root cause, implemented corrective action, and verified effectiveness. This cycle needs to be documented in a traceable way.
Staff Training and Competency Records
The standard requires not just that training occurred, but that competency was assessed and documented for each procedure and each staff member. This is particularly relevant in respiratory labs where staff rotate across spirometry, sleep, and other modalities.
What Is the NATA Accreditation Process for Respiratory Labs in Australia?
In Australia, ISO 15189 accreditation for human pathology and clinical physiology laboratories is administered by NATA (National Association of Testing Authorities) [1]. The process involves several stages [5]:
Research and gap analysis: Understanding where your lab's current practices sit relative to ISO 15189 requirements
Developing technical, clinical, and management systems: Building or updating your laboratory quality management system to meet the standard
Arranging a NATA advisory visit: An optional pre-assessment to identify gaps before the formal assessment
Formal assessment: On-site review by NATA assessors against the full standard
Addressing findings: Responding to any non-conformances raised during assessment
Ongoing surveillance: Periodic reassessment to maintain accreditation
The RCPA notes that ISO 15189 accreditation provides a structured mechanism for continuous improvement, not just a one-time certification event [2]. This is an important mindset shift for labs approaching accreditation for the first time.
How Does Cloud-Based Lab Management Software Support ISO 15189 Compliance?
The administrative load of maintaining iso 15189 quality management documentation manually is substantial. Labs that rely on spreadsheets, shared drives, and paper-based systems tend to find accreditation cycles stressful because evidence is scattered and version control is inconsistent.
Purpose-built laboratory quality control software addresses this by centralising compliance evidence in a single system. The practical advantages include:
Audit-ready document libraries with version history, review dates, and access logs
Integrated non-conformance registers that track issues from identification through to corrective action verification
Training and competency records linked directly to staff profiles and procedure lists
Quality control data that is automatically plotted and flagged against Westgard rules
Audit scheduling and findings management in one traceable workflow
For respiratory and sleep labs specifically, this integration matters because the same platform that manages patient reporting should also manage accreditation evidence. Switching between disconnected systems increases the risk of errors and makes it harder to demonstrate consistency to assessors.
Frequently Asked Questions
Is ISO 15189 mandatory for respiratory labs in Australia?
In Australia, NATA accreditation against ISO 15189 is not mandatory for all respiratory labs. The TSANZ/NATA accreditation program for respiratory function labs provides a formal pathway and is advantageous for demonstrating quality to referrers, funders, or hospital bodies, but is not explicitly required. Requirements may vary by state and funding arrangement.
What is the difference between ISO 15189 and ISO 9001?
ISO 9001 is a general quality management standard applicable across industries. ISO 15189 is specific to medical laboratories and includes additional technical requirements related to examination processes, competency, and patient safety [4].
How often does a lab need to be reassessed for ISO 15189?
NATA conducts periodic surveillance assessments. The exact cycle depends on the laboratory's scope and history, but labs should treat accreditation as an ongoing process rather than a periodic event [5].
What is ISO 15189 document control?
Document control under ISO 15189 refers to the system a lab uses to create, review, approve, version-control, and retire documents such as SOPs, policies, and forms. Documents and records must be available, protected, legible, and readily retrievable, with amendments traceable and records retained per defined periods [3].
Can a software platform manage ISO 15189 compliance for a respiratory lab?
Yes. Purpose-built platforms can manage documents, training records, non-conformances, audits, and quality control data in a single system, significantly reducing the manual effort of maintaining compliance evidence.
What is the 2022 update to ISO 15189?
ISO 15189:2022 introduced stronger emphasis on risk-based thinking, patient-focused outcomes, and process management, building on the 2012 version [3].
Does ISO 15189 cover sleep lab reporting?
Yes. ISO 15189 applies to any medical laboratory function, including sleep study reporting, where results are used to inform clinical decisions.
About Rezibase
Rezibase is Australia's most advanced cloud-based respiratory and sleep reporting and management platform, trusted by over 35 sites including NHS hospitals in the UK and NSW Health in Australia. Founded by respiratory scientists and backed by Cardiobase's healthcare technology expertise, Rezibase is purpose-built for clinical physiology labs. The platform's dedicated accreditation module covers everything a respiratory or sleep department needs to meet TSANZ/NATA standards and ISO 15189 requirements, including document control, training records, non-conformance management, action plans, audits, and Westgard-based quality control. Rezibase is manufacturer-agnostic, fully cloud-based, and offered with transparent all-inclusive pricing and no lock-in contracts.
If your lab is preparing for ISO 15189 accreditation or looking to reduce the administrative burden of your next NATA cycle, Rezibase is worth a closer look. Visit rezibase.com to learn more or book a free trial.