Without being routinely tested and measured how do you know you are healthy? Health is measured in metrics, tracked by numbers, calculated, and isn't related to how you look and feel necessarily. You can look and feel great and be sick by biomarkers. In the end the biomarkers don't lie because numbers can't lie.
That being said if you feel sick this does matter even if your numbers say you are in good health. Let it motivate you to investigate deeper, collect more data on the current state.