Have to do a hair sample test, I am bald and due to Indian heritage have very little body hair. What do they do? If there isn't enough hair will I be not eligible for position.

They can take what hair you have... I've only known one person in my life that didn't have a single strand of hair on their body (none... no eyelashes, no eyebrows, no pubic hair, no armpit hair, zip, nothing). But they were born that way.