Useful TST (PPD)/IGRA interpreter website for TB testing. A 31 yoM Texan w/ +IGRA only (true pos) has risk of active TB & INH hepatitis 0.1% & 0.4%. But if this was 60 yoF from Iraq on TNFi & pred the same risks are 20% & 2.3% https://t.co/M18cHuLrXu https://t.co/zIoFY4abXN