Some people will tell you it is not necessary and these are the very people who are liable of health challenges. Most likely, they are already sick and they just don't want to admit it.
Besides those standard packages such liver and kidney functions and etc, I would recommend you to add-on the following tests:
- C-Reactive Protein
- Insulin Growth Factor (IGF-1)
- Various Tumor/Cancer marker: Pancreatic, Liver, Colon, Lung, Breast(woman), Ovarian(woman).