Blood pressure values measured at the doctor's by the doctor him/herself or practice staff using the standardized Riva-Rocci method, listening to what is referred to as 'Korotkoff' sounds, are usually slightly higher than the blood pressure values you measure yourself in a relaxed, home-based environment. This is referred to as "doctor's practice" or "white-coat" hypertension.
People who experience elevated blood pressure values under everyday stress conditions may have normal readings at the doctor, under calm conditions. This is referred to as "doctor's practice" normotonia.