**This App Will Be Discontinued Soon. Is Replaced by docLogica.**

Once should never order a test without knowing how it performs. This app is a comprehensive bedside resource for medical professionals containing the diagnostic accuracies of medical tests (history, physician exam, imaging, laboratory etc.). Improve your practice by calculating how common tests change a patient's probability of disease quickly and accurately.

- Over 1000 unique tests with more to be added with every update
- Pre-test probabilities for common presentations straight from the literature
- Not-to-Miss Diagnoses section listing life-threatening aetiologies of common presenting complaints
- Arrange tests by best rule-in or rule-out
- For the statistically savvy, option to show likelihood ratio values with confidence intervals

What's New

Version 3.62

DxLogic is now discontinued and will no longer be updated or supported. It has been replaced by docLogica in the apple app store. This new app has all that you loved about DxLogic with extensive new features (symptom database and DDx maker) and a brand new, made for iOS 11, interface. This last update provides in-app links to docLogica's app store profile. There are also a few minor database additions.

Ratings and Reviews

The way medicine should be done


Not every disease is amenable to objective testing or known probabilities, but those that are should have the best information at hand. This app is a carefully curated collection of solid medical evidence. The technology to bring the best evidence and simple accurate calculations right to the bedside is finally here.

Thanks for the update


Very helpful with mini-tutorial on LR's, really appreciate the can't miss diagnosis part. Worth a lot more than 4.99 especially if it even helps just one patient.

Essential Medical App!

Mookie Boston

This app is a large, easily searchable repository of likelihood ratios. It has been indispensable when ordering/interpreting tests for patients. I highly recommend it.


Michael Garfinkle
24.3 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
You must be at least 17 years old to download this app.
Frequent/Intense Medical/Treatment Information
© 2017 Michael Garfinkle


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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