Table 3

Decision to treat analysis based on the availability of AFB smear and DAT result

High clinical suspicion of tuberculosisLow clinical suspicion of tuberculosis
Smear positiveSmear negativeSmear positiveSmear negative
ActionDAT resultAction without DAT resultAction with DAT resultAction without DAT resultAction with DAT resultAction without DAT resultAction with DAT resultAction without DAT resultAction with DAT result
This table is modified from Catanzaro et al.43
Question marks indicate that the clinical, public health, and laboratory groups could not agree on action in these cases, but instead recommend re-assessment of clinical details and repeat testing.
AFB, acid fast bacilli; DAT, direct amplification test.
Treat+YesYesYesYesYesYesNo?
TreatYes?Yes?YesNoNoNo