Best Oximeters (Fingertip)

Pulse Oximeters: Those Two Numbers That Could Save Your Life

COVID taught us all what SpO2 means—but knowing your oxygen levels matters far beyond pandemics.

Understanding the Numbers
SpO2 (Oxygen Saturation):

95-100%: Normal
- 90-94%: Low—monitor closely
- Below 90%: Concerning—seek medical attention
- Below 88%: Emergency

Pulse Rate:
- 60-100 bpm: Normal resting
- Varies with activity and fitness
- Irregular rhythms may be detected

### Accuracy Matters
Factors affecting readings:
- Cold fingers (warm them first)
- Nail polish (especially dark colors)
- Motion during reading
- Poor circulation
- Skin tone (some devices less accurate)

The skin tone issue:
FDA studies found some oximeters less accurate on darker skin. Hospital-grade devices like Masimo address this. For critical monitoring, invest in validated accuracy.

### When to Use
Regular monitoring for:
- COPD and lung conditions
- Recovering from respiratory illness
- High-altitude activities
- Sleep apnea assessment
- Post-surgery recovery

Spot checks for:
- Feeling short of breath
- COVID or flu symptoms
- Exercise tolerance assessment
- General wellness awareness

### Don't Panic, Do Act
A single low reading means:
1. Warm your fingers
2. Remove nail polish
3. Sit still and re-measure
4. Try a different finger
5. If still low, call your doctor