Inicio » Tuberculosis Blood TestTuberculosis Blood Test The QuantiFERON-TB Gold test is required for immigrants and refugees in the United States. ¿How does it work? A blood sample is drawn from the patient.The sample is sent to a laboratory for analysis and results are obtained. Prior preparation No prior preparation is required to do this process. Our promotions may change in price without prior notice. YOUR HEALTHCARE MADE EASY Tags:Laboratory studies previousSkinny InjectionnextA LOW-COST CLINIC FOR IMMIGRANTS AND UNINSURED RESIDENTS IN MIAMI