Measure your mood

Objective measurement of mental health signals, enabling earlier insight and better conversations.

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Introduction

Ending stigma through science.

We're on a mission to end the stigma of mental health. Our simple test kit helps you understand your mood, supported by methods to recognise and manage behaviour and treatment response.

A simple swab test measures your mood signals with immmediate results

Developed alongside clinicians and healthcare professionals in the NHS

Developed alongside clinicians and healthcare professionals in the NHS

Personalised guidance based on your data

Personalised guidance based on your data

Repeated testing to track changes over time

Repeated testing to track changes over time

How it works

The scientific window into your mind

Take a quick taste test

Receive your results in a few hours

Discuss your score

Ask any questions you may have about your report

Get personalised gudiance

Tailored advice that evolves with your goals

Retake the test

Further tests every 3-6 months show you which treatments really work

Chat to counsellors

We connect you with professional help

Take control

Clear signals to keep you calm about your journey

Take a quick taste test

Receive your results in a few hours

Discuss your score

Ask any questions you may have about your report

Get personalised gudiance

Tailored advice that evolves with your goals

Retake the test

Further tests every 3-6 months show you which treatments really work

Chat to counsellors

We connect you with professional help

Take control

Clear signals to keep you calm about your journey

Take a quick taste test

Receive your results in a few hours

Discuss your score

Ask any questions you may have about your report

Get personalised gudiance

Tailored advice that evolves with your goals

Retake the test

Further tests every 3-6 months show you which treatments really work

Chat to counsellors

We connect you with professional help

Take control

Clear signals to keep you calm about your journey

Testimonials

Recommended by experts

  • "Objective measurement is key to early detection treatement."

    "For decades, psychiatry has relied primarily on subjective reporting to assess mood disorders. While validated questionnaires are valuable, they depend on interpretation and recall. What distinguishes Ranvier’s work is the disciplined attempt to introduce a measurable biological signal into that diagnostic pathway."

    Dave Nutt

    Chair in Neuropsychopharmacology and director of the Neuropsychopharmacology Unit in the Division of Brain Sciences at Imperial College London

    1/3

  • "Ranvier can ease GP pressure while expanding early access to mental health support."

    "By normalising mental health assessment in everyday settings, Ranvier supports both clinicians and communities; improving pathway clarity while preserving clinical judgement at the point of care."

    Dr Umang Patel

    Practicing GP and digital health leader with senior experience in NHS transformation and clinical informatics. He advises on how technology can responsibly reduce system burden while improving patient access and outcomes.

    2/3

  • "Ranvier connects objective insight with real-world mental health delivery."

    "Mental health innovation must move beyond technology to deliver real impact across care pathways. By combining measurable biological signals with practical system thinking, Ranvier has the potential to strengthen decision-making and support earlier mental health engagement."

    Shai Blackwell

    Global life sciences advisor and team leader with experience across medical, commercial, patient engagement and data-driven programme execution.

    3/3

  • "Objective measurement is key to early detection treatment."

    "For decades, psychiatry has relied primarily on subjective reporting to assess mood disorders. While validated questionnaires are valuable, they depend on interpretation and recall. What distinguishes Ranvier’s work is the disciplined attempt to introduce a measurable biological signal into that diagnostic pathway."

    Dave Nutt

    Chair in Neuropsychopharmacology and director of the Neuropsychopharmacology Unit in the Division of Brain Sciences at Imperial College London

    1/3

  • "Ranvier can ease GP pressure while expanding early access to mental health support."

    "By normalising mental health assessment in everyday settings, Ranvier supports both clinicians and communities; improving pathway clarity while preserving clinical judgement at the point of care."

    Dr Umang Patel

    Practicing GP and digital health leader with senior experience in NHS transformation and clinical informatics. He advises on how technology can responsibly reduce system burden while improving patient access and outcomes.

    2/3

  • "Ranvier connects objective insight with real-world mental health delivery."

    "Mental health innovation must move beyond technology to deliver real impact across care pathways. By combining measurable biological signals with practical system thinking, Ranvier has the potential to strengthen decision-making and support earlier mental health engagement."

    Shai Blackwell

    Global life sciences advisor and team leader with experience across medical, commercial, patient engagement and data-driven programme execution.

    3/3

  • "Objective measurement is key to early detection treatment."

    "For decades, psychiatry has relied primarily on subjective reporting to assess mood disorders. While validated questionnaires are valuable, they depend on interpretation and recall. What distinguishes Ranvier’s work is the disciplined attempt to introduce a measurable biological signal into that diagnostic pathway."

    Dave Nutt

    Chair in Neuropsychopharmacology and director of the Neuropsychopharmacology Unit in the Division of Brain Sciences at Imperial College London

    1/3

  • "Ranvier can ease GP pressure while expanding early access to mental health support."

    "By normalising mental health assessment in everyday settings, Ranvier supports both clinicians and communities; improving pathway clarity while preserving clinical judgement at the point of care."

    Dr Umang Patel

    Practicing GP and digital health leader with senior experience in NHS transformation and clinical informatics. He advises on how technology can responsibly reduce system burden while improving patient access and outcomes.

    2/3

  • "Ranvier connects objective insight with real-world mental health delivery."

    "Mental health innovation must move beyond technology to deliver real impact across care pathways. By combining measurable biological signals with practical system thinking, Ranvier has the potential to strengthen decision-making and support earlier mental health engagement."

    Shai Blackwell

    Global life sciences advisor and team leader with experience across medical, commercial, patient engagement and data-driven programme execution.

    3/3

FAQ

Frequently Asked Questions

Everything you need to know about Ranvier before getting started.

Read all the FAQs

What is Ranvier?

Ranvier is developing a research-based diagnostic insight tool that measures changes in sweet taste sensitivity and compares them with validated mood questionnaires. The aim is to explore whether objective sensory signals can provide structured insight into mood levels. The test is currently in the research and validation phase and is not yet publicly available.

Is the test available to the public?

What actually happens during the test?

Who can take part?

How accurate is the test?

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Need urgent support?

Ranvier is designed for self-understanding, not diagnosis or crisis care. If you're feeling overwhelmed or unsafe right now, please reach out for immediate support.

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