Isabel - The Symptom Checker doctors use and trust

Developed, refined and tested over 20 years using Artificial Intelligence technologies, Isabel is the most capable and sophisticated symptom checker available.

Why use Isabel?
Why use Isabel?

Why should you use Isabel?

1. Our symptom checker is quick and easy to use - enter as many symptoms as you like without the endless questions.

2. Use the one the doctors use. The Isabel professional tool has been used in leading hospitals worldwide since 2001.

3. The Isabel Symptom Checker is recognised worldwide for its accuracy covering both common and rare conditions.

Remote triage using the Isabel Symptom Checker

We recently added a COVID-19 module into our symptom checker. Only a machine learning based tool like Isabel can handle the growing complexity of how COVID-19 presents.

Whether in primary or secondary care, the Isabel Remote Triage System can help you remotely prioritise which patients need help and provide you with the relevant information you need to efficiently triage when you contact them.

The system can be set up in under 3 hours keeping your clinicians safe while still providing reassurance and great care to your patients.

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Dr Max prescribes... Isabel Online Symptom Checker

“……….This free symptom checker uses Artificial Intelligence and is based on one favoured by doctors. It's simple to use, allows you to key in symptoms or worries ………. with advice on where to go next and when to get urgent help.”

- Daily Mail, Saturday, September 28th, 2019

Daily mail

Are you an institution looking for a patient symptom checker?

Isabel makes its APIs available for you to build the Isabel Symptom Checker into your system. If you don’t have developers on hand, you can make use of our browser version, with additional customizations, to make it look more like your system.

If you are a medical institution, health information or telehealth company looking for a symptom checker, discover more through the Isabel Developers Program.


Are you a looking for a tool to help clinicians with clinical reasoning?

You need the professional Isabel DDx Generator. Used by leading hospitals worldwide to enhance their clinicians’ clinical reasoning skills.

Why use Isabel?

What makes Isabel so unique?

Unlike any other symptom checker, Isabel is unique in being able to handle even large and complex medical presentations using multiple AI and enhanced machine learning algorithms while remaining quick and easy to use.

It’s been crafted, tuned, tested and used by doctors around the world for almost 20 years.