Technical tips for IGRA | |
---|---|
Do | Do not |
Liaise with your lab in advance to obtain correct bottles and plan test timing Fill test bottles accurately (3×1 ml for QFT-GIT, 5 ml for T-SPOT.TB) Gently invert QFT-GIT bottles 10 times to mix Ensure filled QFT-GIT bottles reach the lab within 12 h, and T.SPOT.TB bottles reach the lab as soon as possible | Assume the test can be done at any time, particularly in the evening or weekends Overfill or underfill test bottles, send blood in other bottles Shake QFT-GIT test bottles vigorously Delay transit of samples to the lab |
IGRA, interferon γ release assays.