|
|
Table 3
Heaf testing
|
|
Heaf test
grade
|
Reaction
|
| Negative |
No
induration
|
| 1 |
4-6 papules |
| 2 |
Confluent papules form
indurated ring
|
| 3 |
Central filling to form disc |
| 4 |
Disc >10
mm with or without blistering
|
|
|
The equivalent Mantoux positive levels done with 10 TU
(0.1 ml 100 TU/ml, 1:1000) are 5-14 mm induration (Heaf 2) and
>15 mm induration (Heaf 3-4), respectively.12 |
|