The new coronavirus can cause an infection in your lungs, which can lower your blood oxygen level, so an oximeter is a must for everyone to monitor our blood oxygen level. Generally speaking, the blood oxygen below 95% for lack of oxygen, if below 90% represents the body may have problems, such as pneumonia and other related diseases, must go to the hospital for a detailed physical examination! There are indeed many different styles, brands, types and prices of oximeters on the market, so how can you tell if the oximeter you buy is real or fake?
Step 1
Real: Whenever the oximeter is clipped to the fingertips of a living person, only then will there be a digital display.
Fake: If the oximeter clip on non-living items, you will still see the numbers beating, this oximeter is definitely a fake. (You can use a pen to do the test)
Step 2
Real: Heartbeat after exercise to be higher than when at rest, the oximeter will have a large change in the number.
For example.
Resting heartbeat: 80 / min
Heart rate after exercise: 113/min
Fake: If the heart rate after exercise is not much different than the number at rest, it is very certain that the oximeter you purchased is fake.
For example.
Heartbeat at rest: 80/min
Heart rate after exercise: 82/min
Step 3
Real: Whenever you hold your breath, your blood oxygen will drop significantly. After returning to breathing, your blood oxygen will maintain the drop and then go back up again.
Fake: Whenever you hold your breath or after returning to breathing, the blood oxygen does not change or drop significantly, which means the oximeter you bought is fake.
