How accurate is a personal blood pressure monitor?

Pressure can fluctuate all day long. Being dehydrated effects blood pressure, and many other things. What is important is being within normal range. 99/60 is fairly common in petite young women from what I can tell. I don’t know stats, but I know a lot of women with blood pressure like that and they are fine. If it is accompanied by feeling spacey or faint, then it is something to address. Mine goes that low in the morning when I first wake, and also when my thyroid is overactive. I am spacey from it.

The home pressure cuffs should be fairly accurate, especially newer ones. Next time you get your pressure measured by a medical professional bring your cuff and see if the reading is similar. Then you can have confidence in your home one.

Hmmmmm okay. I’m supposed to get blood work done once some forms pass for financial assistance. Lol a lot of little things are wrong with me like
Chronic stuffy nose of three months, toothache (wisdom teeth maybe), and the whole headache/fatigue/feeling faint and spacey

You want to know how accurate the home Blood pressure monitor is. Here’s a test for you.
OK…First you need a little physics lesson.
Humans are basically sacks of water. The heart is basically a pump.
Your blood pressure is correctly measured when the cuff is at the level of your heart.
If the cuff is higher than your heart the result will be lower. If it is below your heart it will read higher.
How much higher? Time for the physics lesson.
Let’s say the number are 100/60 the units are in mm of mercury pressure, written as 100 mmHg. Mercury has a density of 13.6 so that means 1360mm of water.
OK, now let’s see how far you can make the pressure change. Lay on your back and raise your arm with the cuff on your muscle. Measure the distance from the center of your heart to the center of the cuff. Use a ruler. Let’s say it is 30 mm above your heart. That means your blood pressure will read 30 mm of water lower or 30/13.6 or about 2–3 mm of mercury lower.
Now lay on your stomach and let your arms dangle below you. The unit will read about 3 mm of mercury higher.
If you buy one of those cheap (non FDA approved) wrist units from Harbor freight your reading will be about 10 mm Hg lower if you hold your hand above your head and 10 mm Hg higher if you dangle your arm at your side.
Try it. I love physics.

Let me see, the question is if home B/P monitors are accurate? Some are and some aren’t. LuckyGuy has it right in the positioning of your arm to achieve different readings. But let me start again, wrist monitors are really crappy and undependable; and the difference could mean whether you’re sitting or standing, or lying down, or whether you exerted yourself or not prior to taking your B/P. Also, how your arm is positioned could play a big difference in readings, too a different reading can result from having old or cheap batteries. The best way to monitor your B/P is with a manual cuff and gauge. I know that they seem a bit intimidating but they really aren’t, anyone can learn to use one. The next best one would be a desktop monitor, the cuff is still present and it inflates with a manual pump, but the reading is digital. With all that being said, your B/P is great! Most people would love to have that pressure. I’m 53 years old and my B/P runs 118/68, which is really good. I really wouldn’t sweat the B/P issue unless my symptoms grew worse and then I’d have CMP Comprehensive Metabolic Profile blood work done to check for anemia or dehydration. I’ve worked in the medical field for 14 years, believe me your pressure is perfect! If you feel lethargic do an activity to increase your heart rate and you’ll feel a lot better!

It’s 6:00 am here and i suddenly realized I made a math error in the estimate I told you. All the physics is correct, of course.
The error was in the example I gave. I said that if you raised your arm the center of your bicep it would be about 30 mm above your heart this reducing the apparent reading by 2–3 mm Hg. Actually if you are average size when you raise your arm it would be about 300 mm above your heart so the BP would read about 25 mm Hg lower. (I did tell you to measure it with a ruler so you would have seen my error.) In the example a 100/60 reading would look like 75/35.
Give it a try.

Next time you go to the doctor’s, take your personal monitor with you and check it against the doctor’s. The calibration in the machine can change and give incorrect readings over time, so you should routinely check it.

A couple days ago, you mentioned you were taking beta blockers. Did you discuss this with your doctor when they said your blood pressure was 99/60?