Long Story Short I Was Worried I Might Have Diabetes

Long story short I was worried I might have diabetes so a friend told me to give him my hand and he'd tell me.

He pricked my hand with his own kit and tested me on his little machine and told me that I was good (even know I know this is not a real diagnostic)

The pricked area was immediately squeezed and all the blood was pushed out of the finger tip.

Am I at a significant risk of contracting anything if he has any blood borne diseases?