Good to knowOne result rarely tells the whole story. Your provider looks at your results together with your symptoms, exam, and other tests.
What the test is
Readings can be less accurate with cold hands, nail polish, poor circulation, and darker skin tones; trends and symptoms matter.
Why it's done
- Breathing problems, COVID-19, pneumonia, asthma, or COPD
- Home monitoring
Getting ready and what happens
- Warm your hands, remove nail polish, sit still, and wait for a steady reading.
How the test is done
- A clip shines light through your fingertip.
What the results mean
| Result | Typical range for adults |
|---|---|
| Normal | About 95% to 100% |
| Concerning | 92% or lower (or below your usual target if you have lung disease) |
Normal ranges vary from lab to lab and can differ by age, sex, and pregnancy. Your report lists your lab's own range next to each result. A result a little outside the range is often not a problem.
Low
Call your provider or seek care, especially with shortness of breath.
When a result needs quick action
Call 911Oxygen 90% or lower, or trouble breathing, confusion, or blue lips
Call your provider todayOxygen 91% to 92%, or dropping from your usual
Questions to ask your provider
- What do my results mean for me?
- Do I need to repeat this test or have other tests?
Related conditions
Related tests
Sources
Last updated 2026-11-13.