an online system to track test results


This is an online tracking system for clinical sample tests. CTest provides a browser-based online status update for testees using personalized QR-codes (and web links). CTest does not require installation of any apps or logins for users. Instead, CTest uses cryptographically secure tracking IDs and does not use any personal data.
The primary aim of this approach was to reduce the burden of clinical staff in the COVID-19 crisis and to allow efficient and almost instantaneous communication of the results to testees. Speedy communication is of the essence in the current crisis, as it virus carriers can be infectious before first symptoms arise.

The software is available at


A preprint is available at


We implemented a special extension for Tübingen in version 0.3.1.