In recent years, the pulse oximeter has become one of the most commonly purchased medical devices for home use. many people keep it in their first aid kit alongside a thermometer or blood pressure monitor. But do we really know how to interpret the readings correctly – and when it’s actually time to worry?
What is a pulse oximeter and how does it work?
A pulse oximeter is a small device that measures the oxygen saturation in your blood (known as spo₂) and your pulse rate.
It works non-invasively – simply place your finger into the clip, and a light sensor evaluates how much of the hemoglobin in your blood is saturated with oxygen.
The measurement takes just a few seconds, and the result appears on the display. this device is particularly useful for people with respiratory or heart conditions, athletes, seniors, and those recovering from infections accompanied by shortness of breath (such as covid-19 or the flu).
What are normal oxygen saturation levels?
95–99% – normal for healthy adults
93–94% – slightly lowered; worth repeating the measurement
below 93% – possible oxygen deficiency, contact your doctor
below 90% – requires urgent medical attention
Keep in mind that in some people (for example, those with copd – chronic obstructive pulmonary disease), slightly lower levels may be acceptable, but always based on a doctor’s recommendation.
How to take an accurate reading
wash and warm your hands – cold fingers can distort the result.
sit still and relaxed – avoid talking or moving during the measurement.
remove nail polish or artificial nails – the light needs to pass through the nail plate.
place the oximeter on your index or middle finger.
wait a few seconds – the reading stabilizes after a short moment.
Don’t panic over a single low reading
Sometimes a pulse oximeter may show a lower reading than expected, especially if your hands are cold, blood flow is reduced, or the device isn’t positioned properly.
always repeat the measurement after a minute in a calm position. only consistently low results below 94% should be considered a warning sign.
Oxygen saturation and how you feel
Don’t rely solely on numbers. If your saturation is normal but you feel short of breath, weak, or experience chest pain – you should still consult your doctor.
Conversely, if you feel well but the oximeter briefly shows 93–94%, there’s usually no reason to panic.
Which pulse oximeter should you choose for home use?
Always choose certified medical devices, which ensure accurate and reliable readings.
In the timago range, you can find modern, compact fingertip pulse oximeters that:
feature a clear led display,
automatically switch off after measurement,
provide fast and precise spo₂ and pulse readings,
are lightweight and convenient for everyday use.
A pulse oximeter is a simple yet extremely useful tool for monitoring your health at home.
the key is to interpret the results calmly and pay attention to how you feel.
Use it regularly, but remember – don’t let the numbers cause unnecessary anxiety. it’s a supportive device, not a replacement for medical consultation.