How to choose the right pulse oximeter
A pulse oximeter is one of the most-used pieces of kit in any practice. Here’s how to pick the right type and get readings you can trust.
The short answer
- Fingertip oximeters are compact and ideal for spot checks in consulting rooms and home visits.
- Handheld oximeters with separate probes suit continuous monitoring, children and frequent use.
- Choose a device that is CE or UKCA marked as a medical device, not a consumer gadget.
- For children and babies, use a device and probe designed for paediatric use.
Shop by type
Fingertip vs handheld
| Fingertip | Handheld with probe | |
|---|---|---|
| Best for | Quick spot checks, home visits, doctor’s bags | Frequent use, continuous monitoring, paediatrics |
| Probes | Built in | Interchangeable adult, paediatric and neonatal probes |
| Display | Small screen on the device | Larger screen, often with alarms and trends |
| Price | Lower | Higher |
Getting an accurate reading
Warm hands
Cold hands and poor circulation can give low or failed readings. Warm the hand first.
Remove nail polish
Nail varnish, gel nails and false nails can interfere with the light sensor.
Keep still
Movement affects readings. Wait for a stable trace before recording.
Features worth paying for
Plethysmograph (waveform)
A waveform helps you see whether the signal is good quality.
Perfusion index
Shows signal strength, helpful when circulation is poor.
Alarms and memory
Useful for monitoring over time or reviewing readings later.
Free download: Our emergency drugs and equipment checklist and doctor’s bag checklist both include oximeter checks. Get it free from our GP resources library.
Ready to order?
Common questions
What is a normal oxygen saturation reading?
For most healthy adults, readings are usually between 95% and 100%. Your clinical guidelines will set the thresholds for action.
Can I use an adult fingertip oximeter on a child?
It may not fit or read accurately on small fingers. Use a device and probe designed for paediatric use.
How often should oximeters be checked?
Follow the manufacturer’s guidance and include them in your equipment maintenance log.
Keep reading
Not sure what’s right for you?
Call our team on 020 3301 6500 or email help@medical-supermarket.com and we’ll recommend the right product, at the right price.
