Ethambutol is a medication primarily used to treat tuberculosis. It is usually given in combination with other tuberculosis medications, such as isoniazid, rifampicin and pyrazinamide. The diagnosis of patients with Human Immunodeficiency Virus (HIV) is complicated by the increased presence of negative tuberculosis. And also it is very difficult to detect the TB in any person after tests. There are many ways to find the TB sensitivity by biological method.