The type of testing you’re probably familiar with is general pathology testing which your doctor does. This type of testing is quite valuable, as it provides a specific value and a reference range that you should ideally be between. Quite often this reference range will provide a yes or no answer.
If you are outside of that range, yes there is a something wrong; if you’re not, everything is fine.
Things are not so black and white though. Taking note of the highs and lows, and how one value relates to another, can provide detailed insight into your health, which is often overlooked.