The logistic regression and independent Pearson’s chi-square showed that there is no significant relationship between the brucellosis and age (P>0.05), aspartate aminotransferase (AST) (P>0.9), alanine aminotransferase (ALT) (P>0.8), and alkaline phosphatase (ALP) (P>0.76) (Data are not shown). This evidence concerns the gene GPT and brucellosis.