This soft, waxy substance is found not only in your bloodstream but also in every cell in your body, where it helps to produce cell membranes, hormones, vitamin D, and bile acids that help you digest fat. Cholesterol also helps in the formation of your memories and is vital for neurological function.
The test that the nurse will need to check is the OXYGEN SATURATION TEST.
In an healthy lungs, the oxygen saturation level ranges between 95 and 100%, this means that, when red blood cells pass through the lungs 95 to 100% of them is saturated with oxygen. When a lung disease is present, this percentage will be highly reduced. Thus, the oxygen saturation test gives an indication of how efficient the patient's breathing is