The morning reading should be taken right after you wake up, and before you take any medicines, drink coffee or eat breakfast.
A morning, afternoon, and evening time are easy choices. Use standard measurement times: Because your blood pressure fluctuates during the day, keeping a blood pressure log will give the most accurate results if you always measure your blood pressure at the same time.
Your healthcare provider can help you choose a reliable device. A digital blood pressure monitor can be easier to use and offers less opportunity for error. Blood pressure monitors may be digital or manual. It's important to select one that provides a reliable and accurate reading.