Fingertip Pulse Oximeter for Adult and Kids, SpO2 Oximeter and Blood Oxygen Saturation Monitor (Batteries Included)

What Is a Pulse Oximeter and How Can It Help You?

Keeping an eye on your blood oxygen levels has never been more straightforward. This pulse oximeter from Cured Pharmacy clips gently onto your fingertip and gives you a clear digital readout of your blood oxygen saturation (SpO2) and pulse rate within seconds — no needles, no fuss. At just £12.99 with batteries included, it's an accessible way to monitor your health at home, whether you're managing a respiratory condition, recovering from illness, or simply keeping tabs on your general wellbeing. You'll find it listed alongside other useful home health tools in our Electrical Health and Diagnostic collection.

The NHS has highlighted the importance of monitoring oxygen saturation, particularly for people with conditions such as asthma, COPD, or heart disease. A healthy SpO2 reading typically sits between 95% and 100%. Anything consistently below 95% warrants a conversation with your GP, and a reading below 92% should be treated as a medical emergency.

How Does a Fingertip Pulse Oximeter Work?

The science behind it is elegant in its simplicity. The device uses a technique called photoplethysmography — it passes two wavelengths of light (red and infrared) through the tissue of your fingertip. Oxygenated and deoxygenated haemoglobin absorb these wavelengths differently, and the sensor on the other side of the clip calculates the ratio to determine your SpO2 percentage. Your pulse rate is measured simultaneously by detecting the rhythmic changes in light absorption caused by each heartbeat.

• Red and infrared light pass through the fingertip tissue
• Oxygenated haemoglobin absorbs more infrared light; deoxygenated haemoglobin absorbs more red light
• The sensor calculates the ratio and converts it to an SpO2 percentage
• Pulse rate is detected from the pulsatile blood flow signal
• Results display on the built-in LED screen within 10–15 seconds

Who Should Consider Using This SpO2 Monitor?

This device is suitable for a wide range of people. It's particularly useful if you or someone in your household has a condition that affects breathing or circulation. That said, it's equally handy for athletes wanting to track recovery, or parents who want peace of mind when a child seems unwell.

• Adults and children with asthma, COPD, or other respiratory conditions
• People recovering from COVID-19 or chest infections
• Individuals with heart conditions or anaemia
• Athletes monitoring exertion and recovery
• Carers and parents wanting a quick health check tool at home

It is not intended to replace clinical assessment. If you have ongoing concerns about your oxygen levels, always speak to a healthcare professional.

How Does This Fingertip Oximeter Compare to Other Home Monitoring Devices?

Is This Pulse Oximeter Clinically Suitable for Home Use?

For the vast majority of home users, a fingertip pulse oximeter is a practical and reliable spot-check tool. It's worth noting that accuracy can be affected by factors such as poor peripheral circulation, cold hands, dark nail varnish, or excessive movement during the reading. Always warm your hands before use and keep your finger still for the most accurate result. If you're also managing a long-term condition and looking for complementary monitoring tools, our Diabetes Monitoring collection includes a range of home diagnostic devices.

This product is a medical device, not a medicine. However, if you have an underlying health condition or are unsure whether home monitoring is appropriate for you, speak to your doctor or pharmacist before use.

What Is This Pulse Oximeter and What Is It Used For?

This fingertip pulse oximeter is a non-invasive home monitoring device designed to measure two key health indicators: your blood oxygen saturation level (SpO2) and your pulse rate. It works by clipping onto your fingertip and using light-based technology to give you a reading within seconds. It is suitable for adults and children and comes with batteries already included, so you can start using it straight away.

It is commonly used by people managing respiratory conditions such as asthma or COPD, those recovering from illness, and individuals who simply want a convenient way to keep an eye on their health at home. It is a spot-check device — meaning it gives you a reading at a single point in time — rather than a continuous monitor. It does not diagnose any medical condition and should never replace professional clinical assessment.

What Do You Need to Know Before Using This SpO2 Monitor?

Before using this device, there are a few important things to be aware of. Certain factors can affect the accuracy of your reading, and in some situations, you may need to seek clinical advice rather than relying solely on a home device.

Do not use or rely solely on this device if:

• You have very poor peripheral circulation (e.g. Raynaud's disease) — readings may be unreliable
• You are in cardiac arrest or experiencing a medical emergency — call 999 immediately
• You have severe anaemia, as this can affect the accuracy of SpO2 readings
• You are using it as a substitute for medical diagnosis or treatment
• The device is damaged or the display is not functioning correctly

Factors that may affect reading accuracy:

• Dark or opaque nail varnish on the finger being used
• Cold hands or poor blood flow to the fingertips
• Excessive movement during the reading
• Darker skin tones — research suggests some devices may overestimate SpO2 in these cases
• Bright ambient light interfering with the sensor

There are no known drug interactions with this device, as it is a diagnostic tool rather than a medicine. However, certain medications that affect circulation or haemoglobin (such as vasoconstrictors) may indirectly affect reading accuracy.

How Should You Use This Fingertip Oximeter Correctly?

Getting an accurate reading is straightforward, but technique does matter. Follow these steps each time you use the device:

1. Warm your hands if they feel cold — poor circulation reduces accuracy
2. Remove any nail varnish from the finger you plan to use
3. Insert your index or middle finger fully into the device clip
4. Press the power button to switch the device on
5. Remain still and relaxed — avoid talking or moving during the reading
6. Wait 10–15 seconds for the reading to stabilise on the display
7. Note your SpO2 percentage and pulse rate
8. Press the power button again to switch off, or allow it to auto-power-off

What Are the Possible Limitations or Side Effects of Using This Device?

As a non-invasive device, this oximeter carries very few risks. It does not pierce the skin or administer any substance. That said, there are a small number of things to be mindful of.

Possible minor issues with use:

• Mild skin irritation or redness if the clip is worn for a prolonged period
• Discomfort if the clip is applied too tightly
• Anxiety caused by misinterpreting a reading — always seek professional advice if unsure

Less common concerns:

• False reassurance from an inaccurate reading due to the factors listed above
• Over-reliance on home monitoring instead of seeking timely medical care

If you're also managing your health with supplements to support cardiovascular or respiratory function, our Vitamins and Supplements collection includes a range of options worth exploring alongside your monitoring routine.

How Should You Store This Pulse Oximeter?

Proper storage will help maintain the accuracy and longevity of your device. Follow these simple guidelines:

• Store at room temperature — avoid extremes of heat or cold
• Keep away from direct sunlight and moisture
• Remove the batteries if the device will not be used for an extended period
• Store in a clean, dry location away from dust and liquids
• Do not drop or expose the device to strong impacts
• Keep out of reach of young children when not in use

If you notice any damage to the device, casing, or display, discontinue use and contact the retailer. For general first aid and home health supplies, you may also find our First Aid collection useful.