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    Two terms, side by side

    Pick any two terms to see definitions, context, pitfalls, and sources in parallel.

    Curated comparison tables

    In-depth, attribute-by-attribute tables for the most common MedTech term pairs. Each row is sourced from the linked term pages.

    Regulatory

    Real-Time PMA Supplement Review

    In one line
    Expedited PMA supplement review pathway where FDA and the manufacturer meet to review minor device or labeling changes in real time.
    Definition
    Real-time PMA supplements are for eligible minor changes affecting safety or effectiveness, such as certain design, software, or labeling changes, for which limited review is appropriate and new clinical data are not needed. FDA determines suitability and uses interactive review. Approval is required before implementation unless another authorized provision applies. Manufacturing-method or process changes should be assessed for the 30-day notice route rather than presumed eligible for real-time review.
    Why it matters
    Real-time PMA supplements are for eligible minor changes affecting safety or effectiveness, such as certain design, software, or labeling changes, for which limited review is appropriate and new clinical data are not needed. FDA determines suitability and uses interactive review. Approval is required before implementation unless another authorized provision applies. Manufacturing-method or process changes should be assessed for the 30-day notice route rather than presumed eligible for real-time review.
    Common pitfalls
    • •Requesting Real-Time Review for changes that aren't truly minor, FDA will reject the request and the sponsor loses time.
    • •Failing to prepare materials at PMA-supplement quality for the meeting, Real-Time Review compresses calendar time, not depth of evidence.
    • •Do not confuse real-time review with a Special PMA Supplement, Changes Being Effected, or with a 30-day manufacturing notice.
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    Why compare MedTech terms side by side?

    MedTech terminology is full of pairs that look interchangeable but carry very different regulatory, clinical, and commercial consequences. Picking the wrong framework, pathway, or standard early in a project can add months to a submission, invalidate clinical evidence, or trigger an audit finding. Side-by-side comparison is the fastest way to surface those differences before they become costly mistakes.

    Each comparison on this page pulls from the same vendor-neutral, sourced definitions used throughout the MedTech Terms glossary. You see the one-line summary, the formal definition, why it matters in practice, common pitfalls, and the primary sources (FDA guidance, EU MDR/IVDR articles, ISO/IEC standards, MDCG documents, IMDRF principles) that back each entry. That makes the comparison defensible in regulatory strategy memos, design reviews, and submission narratives.

    Common comparison patterns

    How to use this tool

    Pick term A and term B from the dropdowns, or click a preset above. The URL updates with both slugs so you can bookmark or share the exact comparison with a colleague, a notified body reviewer, or your regulatory consultant. Click Open full page on either side for the complete entry, including FAQs, related terms, and the full citation list. If you are not sure which term to start with, browse the Categories view or the A-Z index.

    MedTech Terms is a vendor-neutral community resource sponsored by Blue Goat Cyber. Definitions are written for educational use and are not legal or regulatory advice.