15/07/2026
Did you know that a pulse oximeter can estimate your blood oxygen level without drawing a single drop of blood?
This small device clips onto your fingertip and uses red and infrared light to estimate the percentage of oxygen carried by your hemoglobin (SpO₂). It's quick, painless, and widely used in hospitals, clinics, and even at home to monitor a person's oxygen status.
It's a great example of how Biomedical Engineering transforms complex science into simple, life-saving technology.
Have you ever had your oxygen level checked with a pulse oximeter? Share your experience in the comments!
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