laboratory diagnostic - infectious diseases - Tuberculosis - Mycobacteria, Interferon gamma production - Quantiferon®, whole blood sample collected in special tubes supplied upon request by todylaboratories®; The quality of the results is subject to strict adherence to the pre-analytical phase, read the instructions carefully, in particular: - shake the tubes vigorously before incubating them for 24 hrs at 37°C; - centrifuge before sending them, at +4°C 3 specific tubes to be requested before the blood sample is taken, QuantiFERON® -TB IT Test, todylaboratories®, code L76LD2047