I didn't reverse-engineer the protocol for my blood pressure monitor in 24 hours

Regarding white coat hypertension, the shot isn’t always necessary. Some people’s blood pressure just goes up from the stress of the clinical setting.

I got it when an eye clinic wanted to do my blood pressure (which is kind of weird in itself), which they did shortly after the glaucoma test which never works for me because I have an overdeveloped blink reflex and it turned up high.

It really amazes me how people whose job it is to take blood pressure don’t recognize the stress situations that people are in might result in abnormal readings.

I had an astoundingly high blood pressure reading last year when I tore my bicep the day after the election and dragged myself to the ER. The staff freaked. I was like, "I had a normal reading two weeks ago in my doctor's office and I'm really in an awful lot of pain and worry right now". But it still earned me the "oh shit hypertension you must do extra pre-surgical clearance".

It was kind of interesting watching my blood pressure tick down back to normal over the course of about 4 days though.

I guess the lesson is don't rip your bicep off, it will transiently elevate your BP. ;)