The blood test is one of the most important diagnostic tools in medicine today. Based on a laboratory examination of the blood picture, the nutrients, enzymes, hormones and antibodies etc. can be determined, which in turn allows conclusions to be drawn about existing diseases. For example, the liver values are checked in the course of a blood test in order to check possible malfunctions of the organ. Inflammation values, blood sugar values, coagulation factors and numerous other biomarkers (including tumor markers) for which certain reference values are available can also be determined. For example, a tiny drop of blood is sufficient to measure blood sugar. In most cases, however, a slightly larger amount of blood is required, which means that a blood sample must be taken from the doctor.
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