The good thing about QuantiFERON In Tube is that you dont have to worry about what sort of tube you have to buy and use, if it is sodium or lithium heparin or whatever - the tubes are already supplied and you just follow the colour code
Blood from each patient must be drawn into each of three Quantiferon (QF) blood collection tubes: Nil Control (grey cap), TB Antigen (red cap), and Mitogen Control (purple cap). Specimens collected in any other tubes will be rejected.
