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UK MHRA · UK · 1 Oct 2025 · Guidance

Guidance: Clinical trials that include an in vitro diagnostic device

AI-generated summary

This MHRA guidance covers the use of in vitro diagnostic devices, including companion diagnostics, in clinical trials of medicinal products with trial sites in Great Britain, and where patient samples are tested elsewhere but results inform patient management decisions in Great Britain. The guidance defines IVD devices and companion diagnostics, and specifies additional information required when applying for MHRA approval of such trials. Updates clarify documentation requirements for unmarked devices where health institution exemption does not apply and include a new application process figure.

From UK MHRA

This guidance covers the use of in vitro diagnostic (IVD) devices, including companion diagnostics, in clinical trials of medicinal products (CTIMPs) with a trial site in Great Britain. It also covers situations where patient samples are tested elsewhere, but the results are used in patient management decisions in Great Britain.

The guidance also defines IVD devices and companion diagnostics, and explains the additional information that must be submitted to MHRA when applying for approval of these clinical trials.

Updated wording to align with current guidance on clinical trials that include an IVD.

Clarified documentation requirements where the device is not UKCA or CE marked, and the health institution exemption does not apply. Created publication 'Figure 1. Application process for clinical trials including an IVD'. Updated publication 'Clinical trials that include an in vitro diagnostic device' with all of these changes as well. Amended 'Details' section to remove repetition.

Excerpt from the official page. The original is authoritative.