Mediterranean(latin and greek etc) race have the highest testosterone level.

Study confirms that Mediterranean men tend to have higher testosterone levels

"Dr. Demers and his colleagues have found evidence that testosterone levels and androgen precursor steroids may vary among different ethnic populations."

"A study of Portuguese, American, and Asian men, for example, revealed that the average testosterone level in the Portuguese subjects was ~ 500, in Americans, ~ 450, and in the Asian population, ~ 400."

"Larger differences were observed with the androgen precursor steroids like DHEA. Asian men generally have less facial and body hair than Americans, who generally have less than the Portuguese."