After my doctor noticed high-ish blood pressure, I bought a meter and started measuring at home. Always below 120/80, sometimes below 110/75. I brought the same meter to the doctor's office and measured 135/85.
Strange, isn't it?
"In general, individuals with white coat hypertension have lower morbidity than patients with sustained hypertension, but higher morbidity than the clinically normotensive."
There goes my plan to live forever. Foiled again!