Clinical performance is a medical device’s ability to achieve its intended clinical purpose in the target population. Under EU IVDR, it describes results that correlate with a clinical condition; under EU MDR, it means achieving the intended purpose and a clinical benefit through the device’s technical and functional characteristics.
What is clinical performance?
Clinical performance sits in the clinical evidence stage of the device lifecycle, after a device’s design and its analytical or technical characteristics are established. The exact meaning depends on the device type and the regulation that applies.
For in vitro diagnostic medical devices (IVDs), IVDR (Regulation (EU) 2017/746), Article 2(41), defines clinical performance as the ability of a device to yield results that are correlated with a particular clinical condition or a physiological or pathological process or state, in line with the target population and intended user. For other medical devices, MDR (Regulation (EU) 2017/745) frames clinical performance as the ability of a device to achieve its intended purpose as claimed by the manufacturer, producing a clinical benefit through its technical or functional characteristics.
Why clinical performance matters in medical device development
A device can pass every bench and analytical test and still fail to perform in clinical use. Clinical performance is the evidence that links a verified design to a real result in patients or samples. Notified bodies expect it before granting CE marking, and gaps here are a common reason technical documentation gets rejected.
The cost of getting it wrong is high. Weak clinical performance data delays market access, triggers additional studies, and can stall a submission for months. For IVDs moving from the old IVD Directive to IVDR, the bar rose sharply: many products that were once self-certified now need documented clinical performance and notified body review. Post-market, a device that underperforms in the field exposes the manufacturer to vigilance reporting, field actions, and liability.
How clinical performance is established
Clinical performance is demonstrated through a structured evaluation, not a single test. The route differs between IVDs and other devices.
For IVDs, IVDR Annex XIII sets a three-part performance evaluation: scientific validity, analytical performance, and clinical performance. Clinical performance is usually shown through:
- Clinical performance studies run to good study practice under ISO 20916, where new data is needed.
- Published literature and peer-reviewed data on the same analyte and intended purpose.
- Routine diagnostic data and experience from accredited testing.
The findings feed a Clinical Performance Report, which sits inside the Performance Evaluation Report (PER) and is maintained across the device lifecycle.
For other medical devices, clinical performance is one strand of clinical evaluation under MDR Article 61 and Annex XIV. Evidence comes from clinical investigations conducted to ISO 14155, equivalence to an already marketed device under strict conditions, or existing clinical data. Results are documented in the Clinical Evaluation Report (CER) and updated through post-market clinical follow-up (PMCF).
Risk management under ISO 14971 and the quality system under ISO 13485 wrap around both routes, tying performance claims to identified risks and controlled processes.
Common challenges and best practices
The frequent failure is a mismatch between the intended purpose and the data. If the claimed population, sample type, or clinical condition is broader than what the study covered, a notified body will flag the gap. Define the intended purpose precisely and early, then design the evidence to match it.
Teams also underestimate how much primary data the IVDR expects. Literature alone rarely covers a novel marker or a new intended use. Plan performance studies during development, not after design freeze, so endpoints and acceptance criteria are set before enrollment.
Other recurring problems include thin statistical justification for sample size, endpoints that do not map to the claim, and clinical performance treated as a one-time deliverable. Good practice keeps it live: a maintained PER or CER, refreshed with post-market data, with clear traceability from each claim to its supporting evidence.
How SJML helps with clinical performance
SJML supports clinical performance as part of its compliance and clinical services for medical devices and IVDs. The QARA team plans and writes clinical evaluation and performance evaluation documentation, including the Clinical Evaluation Plan, CER, Clinical Performance Report, and SSCP, alongside literature review and clinical data management. Support extends into post-market surveillance and PMCF planning, so performance claims stay current after launch. Because SJML also handles design, engineering, and risk management under one roof, clinical evidence stays connected to the technical file and ISO 14971 risk files.
Frequently asked questions
Analytical performance is how accurately a device detects or measures its target, such as an analyte in a sample. Clinical performance is whether those results correlate with a clinical condition or achieve the intended clinical purpose. For IVDs under IVDR, both are required, and analytical performance is established first, with clinical performance built on top of it.
No. IVDR (2017/746) defines clinical performance as results that correlate with a clinical condition in the intended population. MDR (2017/745) defines it as a device achieving its intended purpose and clinical benefit through its technical characteristics. IVDs document it in a Performance Evaluation Report; other devices document it in a Clinical Evaluation Report.
A clinical performance study generates data to confirm an IVD’s clinical performance in its intended population. Under IVDR, such studies follow good study practice in ISO 20916 and feed the Clinical Performance Report. They are used when literature and routine data cannot fully support the claimed intended purpose, especially for novel markers or new uses.
For IVDs, clinical performance is captured in a Clinical Performance Report within the Performance Evaluation Report under IVDR Annex XIII. For other medical devices, it forms part of the Clinical Evaluation Report under MDR Annex XIV. Both are living documents, updated with post-market data across the device lifecycle.
Related terms
- Clinical Evaluation
- Performance Evaluation (IVDR)
- Clinical Investigation
- Clinical Evidence
- Post-Market Clinical Follow-up (PMCF)
