do you need to fast for a pulse oximeter test (blood oxygen test) and if so for how long?

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Air Ambulance – The Benefits of This Fast, Life-Saving Service

Where do you turn for help when you or a family member requires serious medical attention and the best care might be hundreds or even thousands of miles away? How will you get there? Who will look after your medical needs during transportation? And most importantly, who will place your safety above all else? Accidents [...]