NutriCheck Non-Invasive Blood Assistant is an innovative device that is worn around the wrist. It is non-invasive and doesn't puncture the skin. In other words, the use of needles would not be necessary for many tasks, such as checking the amount of glucose in your body. Its purpose and function is to act as a health tool that measures the levels of six fundamental nutrients and substances in the blood stream: glucose, cholesterol, sodium, potassium, chloride, and blood urea nitrogen. Upon knowing the levels of these nutrients and substances, one can determine if they are at risk of certain diseases, what steps to take if they are, or when they should take their medication if they have a pre-existing disease or disorder associated with abnormal amounts of one of those nutrients and substances.