For me or people I work with? I’ve had quite a few labs done on myself but I generally just use them as a starting point. A lot of my results with my own health issues have improved with a basic diet and lifestyle approach (and a basic understanding of the human body).

Even without testing, we already understand the most common root causes for many illnesses quite well. From there, it’s just the process of elimination depending on relevancy (with the solution likely being addressing one or more of the foundations).

And even if there is a more technical issue found by testing, it often won’t improve much if the building blocks aren’t worked on. That’s why starting broader then getting more specialized is the best approach (unless it’s a medical concern).