The TIME you press the 'm' Button is very important. Therefore you should NOT press the 'm' Button until you have read the User Guide.

When you press the 'm' Button you tell your Monitor that your period has started and a new cycle has begun. You also establish the six hours each day during which you can do a test. This is called the "Testing Window". PERSONA has this Testing Window so it is convenient for you to test the FIRST urine of the day.


Your Testing Window is set to run from 3 hours before the time you press the ‘m ’ Button to 3 hours after – a 6 hour Testing Window. You should perform the tests within this Testing Window using your first urine of the day. Your Testing Window should therefore be at a convenient time for you to test with the first urine of the day both on weekdays and at weekends.

Example: you press the ‘m ’ Button at 9 am, your Testing Window will be 3 hours either side of this time, ie from 6 am to 12 midday.



At the start of each cycle you can select a different time if you choose, but remember that you need to test with your first urine of the day.


The Testing Window is set to run from 3 hours before the time you pressed the 'm' Button, to 3 hours after. The PERSONA Monitor will only request a test (by shining the Yellow Test Light) during the Testing Window, so you must check your Monitor during this time each morning to see if you need to do a test that day. After the first month you will only be asked to do 8 tests.

If you forget to check your PERSONA Monitor during the Testing Window you may miss a test without realising it, as the Yellow Test Light will only shine during the Testing Window. PERSONA will make the safest decision using the available information. This may result in more 'Red' Days for this and subsequent cycles.