This Tuberculosis Test, or TB test, is designed to identify whether or not TB is present in your blood. Tuberculosis is a highly contagious disease spread through the air by way of coughing, sneezing, or simply breathing in close proximity to another person. Common symptoms include weakness, fever, chest pains, and severe coughing spells, though it is possible to have the disease and show no symptoms whatsoever. Fortunately, TB is treatable and curable if caught early enough. But, the only way to know for sure is to take a Tuberculosis Test.