TB Gold; QFT Gold Plus; QFT TB; QFT Plus; IGRA
See Collection Instructions
Quest Diagnostics San Juan Capistrano
0.8-1 mL Blood collected in the 4 QFT-Plus blood collection tubes
For each patient, collect 1 mL of blood by venipuncture directly into each of the 4 QFT-PLUS blood collection tubes. These tubes should be at 17-25 C at the time of draw. If a "butterfly needle" is being used, a "purge" tube should be used to ensure that the tubing is filled with blood prior to the QFT(R)-Plus tubes being used. Immediately after filling the tubes, shake them 10 times just firmly enough to ensure the entire surface of the tube is coated with blood, to solubilize antigens on tube walls.
Room Temp: 72 Hours; Refrigerated: 72 Hours; Frozen: Unacceptable
Non-incubated specimens; Received frozen
1 mL (x4) Incubated Blood
0.8 mL (x4) Incubated Blood
Each of the four tubes must be transferred to a 37 C + or - 1 C incubator as soon as possible and within 16 hours of collection for 16-24 hours. If the blood is not incubated immediately after collection, re-mixing of the tubes by inverting 10 times must be performed immediately prior to incubation. The specimen rack should sit off the floor of the incubator and the tubes should be upright. Following incubation, immediately transport the 4 collection tubes to Quest Diagnostic between 4 and 27 C. Samples will be stable for 72 hours at 4-27 C refrigerated or at room temperature.