All results have the so-called reference range, i.e. the minimum and maximum. In the event that the result persists in between, it is assumed that this is a normal result, of course, all results must be interpreted by a doctor. Some results are described as positive or negative, of course, in this case positive can mean the presence of a pathogen or other abnormality.
For initial diagnostics, not only basic blood tests are needed, but at least once a year, a basic urine test and basic stool analysis should be performed.