This is a non-invasive measure of one's oxygen saturation; that is, the amount of oxygen saturated in one's hemoglobin in terms of a percentage.

When measuring the ECG electrodes are placed on the skin of the patient. A one lead-system only measures the ECG at one point. By using 3, 5 or 12 leads you improve the ECG resolution enable interpretation of a number of diseases and/or complications

Peak flow meters record peak expiratory flow rate (PEFR), the fastest rate at which air can move through the airways during a forced expiration starting with fully inflated lungs. The PEFR correlates well with Forced Expiratory Volume in 1 second (FEV1); the greatest volume of air that can be breathed out in the first second of a large breath.

Non invasive blood pressure (NIBP) is usually measured by an instrument called a sphygmomanometer or blood pressure meter.

The glucose testing is based on the measurement of electrical current generated by the reaction of glucose with the reagent of the strip.