To edit lab results, go to the Labs tab and tap on the pencil icon.
Tap on Edit result.
Enter the new value and tap on OK to confirm.
Go to the Labs tab and tap on the pencil icon.
Tap on Reverse.
To backdate an analysis, add a lab result like you normally do from the Labs tab > Add Result, this will set the analysis to current date and time by default.
If you want to change the date of the analysis to a past date, tap on the clock icon or Just now.
Select the date and time of the analysis and tap on OK.
The selected date and time is shown on the analysis and tap on OK to confirm.
The analysis was set to a date in the past.