QbD Group
    Regulatory Update

    Revised MDCG 2021-4 Guidance Documents Released

    On September 25, 2024, the Medical Device Coordination Group (MDCG) released Revision 1 of the guidance on the application of transitional provisions for the certification of Class D in vitro diagnostic medical devices under Regulation (EU) 2017/746 (MDCG 2021-4). This update provides additional clarifications regarding the operational start date of the European Reference Laboratories (EURLs) on October 1, 2024.

    Application of transitional provisions for the certification of Class D in vitro diagnostic medical devices under Regulation (EU) 2017/746 (MDCG 2021-4).

    The guidance outlines how the IVDR transitional provisions relate to expert panels and EURLs. Effective October 1, 2024, EURLs will be fully operational and will undertake specific responsibilities as detailed in Articles 10-16 of Commission Implementing Regulation (EU) 2022/944. Devices certified under the IVDR prior to the activation of the EURLs will maintain valid certification until their specified expiry dates. However, sample or batch testing will be required for all certified devices falling under the EURLs’ scope. In these instances, Notified Bodies are obligated to coordinate with the EURLs to meet the requirements set forth in Articles 10, 11, and 13 of the Commission Implementing Regulation.

    What does it mean to you?

    MDCG 2021-4 Revision 1 is relevant to all manufacturers of Class D IVDs, as it may clarify questions regarding the operational procedures of the EURLs.

    CTA RA update

    About the Author

    Kirsten Van Garsse
    Kirsten Van Garsse

    MSc Biomedical Sciences · Director Authorised Representative Services & Manager IVD – Regulatory Affairs

    With over 20 years of experience in the diagnostics industry, Kirsten leads the IVD Regulatory Affairs business unit at QbD Group, guiding regulatory strategy and compliance across all IVDs with a focus on companion diagnostics.

    QbD Group

    Need help navigating regulatory pathways? Our experts can guide you.

    Get expert guidance →
    Share this article

    Subscribe to the latest updates in life science

    Expert perspectives delivered to your inbox — pick your interests.

    No spam, ever. Unsubscribe anytime.

    Keep reading

    Related content

    MDCG on Breakthrough Devices ReleasedRegulatory Update

    MDCG on Breakthrough Devices Released

    Regulatory AffairsDec 17, 2025

    On 15 December 2025, the Medical Device Coordination Group (MDCG) published MDCG 2025-9 - Guidance on Breakthrough Devices (BtX) under Regulations 2017/745 & 2017/746, introducing a streamlined regulatory pathway for Breakthrough Devices (BtX) under the MDR and IVDR. The guidance establishes a formal designation process for highly novel devices with a significant positive clinical impact, enabling accelerated conformity assessment and early market access supported by robust post-market evidence generation.

    Read more

    We use cookies to enhance your experience

    We use essential cookies for site functionality and optional analytics cookies to improve our services. Read our Privacy Policy and Cookie Policy.