Initially I was told by my doctor to take the BP 2 or 3 times a day, 2 or 3 readings each time and just record the lowest number. The average to be less than 135/85. Now she says new guidelines state I must use 15 readings, taken twice a day and to take 2 readings each time, a minute apart. Disregard the first day and make an average out of all the numbers. This is to remove the white coat syndrome I imagine. However EVERY time I take my BP the first reading is about 20 points higher than the subsequent ones, so I feel I am getting white coat every time and should disregard that number. When I visit the surgery it shoots off the page, yesterday it was 200/100+, whereas home readings gave me an average of 125/78, over a week.