Strange.

Today I went for my six monthly asthma check up. I blow through things, have my sats done, blood pressure and I am weighed.
Well, after not smoking that much in the last couple of weeks, my sats were down to 95%. I honestly thought they would be higher than that. Huh.
Sats are the amount of oxygen in the blood.
Of course, (she said lying through her teeth,) it could have been due to the 'flu jab I had just had!
Nah, don't think so. Funny how the sats were higher when I smoked like a chimney.

Oximetry is one way to measure oxygen saturation in your blood. A small clip is placed on the hand, toe, earlobe or an infant's foot. This is a simple, convenient, painless way to determine your need for oxygen. This test may be done at rest, during sleep and while you are walking for a thorough evaluation. (Commonly known as SATS)