Collect
1 mL into each of 4 (Nil, TB1, TB2 and Mitogen) QFT-Plus Blood Collection Tubes.
Draw 1 ml into each tube and fill exactly up to the black line - validated range of 0.8 to 1.2 ml. **DO NOT OVERFILL OR UNDERFILL TUBES**. Immediately after filling tubes, shake firmly 10 times to ensure that the tube surface is coated with blood. **Avoid shaking too vigorously which could cause gel disruption.** Label each of the four tubes and include the time of collection. Maintain tubes at ambient temperature.
Specimen Preparation
Do NOT centrifuge! Keep at room temperature (17-25°C).
Pediatric Collection
1 mL into each of 4 (Nil, TB1, TB2 and Mitogen) QFT-Plus Blood Collection Tubes
Unacceptable Conditions
Improperly filled tubes, frozen or centrifuged specimens.
Storage Transport Temp
Place all four tubes in one biohazard bag and send at ambient (17-25°C) temperature in a well-insulated container to reach the laboratory within 16 hours of draw. When shipping, send ambient whole blood Priority Overnight via FedEx and in a well-insulated container.
Stability
Stable at room temperature (17–25°C) for a maximum of 16 hours following draw.
Notes
If other blood work is requested, please collect the QFT-Plus In-Tubes LAST.
If a “butterfly needle” is being used to collect blood, a “purge” tube should be used to ensure that the tubing is filled with blood prior to the QFT-Plus Blood Collection tubes being used.