Blood tests do not detect tuberculosis. Although the number of white blood cells in the blood increases when a patient has tuberculosis, there are many reasons for the increase in white blood cells, and inflammation in the patient’s body can also lead to an increase in white blood cells. Tuberculosis itself is a highly contagious respiratory disease, so if you have symptoms of tuberculosis, you need to go to the hospital as soon as possible to find out the cause and get treatment according to your doctor’s recommendations. Patients with tuberculosis need to eat a diet rich in vitamin A and vitamin C, and to increase their fluid intake to keep the airways open.