Yes. Once a test is correctly started, you can close the Cue Health App without interfering with the Cue Cartridge Reader or the analysis inside a Cue Cartridge. Losing power on your mobile smart device will also not interfere with the test. After the test has finished, your results will automatically upload via secure Bluetooth® connection to your Cue Health App when the app is open and the mobile smart device is in range of the Cue Reader.