blood test and physical

aite ive been looking at the stuff posted here and theres alotta good shit
im curious my dad said i was getting fat and he wants me to get a physical and blood test for chlosterol and what not
(im 5 7 and 155 pounds btw i eat madd food but i usually play bball every other day but i got a slow ass metabolism)
so i was juss wondering r they gonna look for drugs
or if they r checking for fat r they gonna come apon drugs
the last time i smoked was 5 days ago and i gotta go next week