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Tuberculosis Prevention and Control Program |
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Wording on the Ruler
- Measure 48-72 hours after injection
- Measure across the forearm
- Measure the diameter of induration (not the erythema / redness)
- Record in millimetres (mm)
Positive TB skin tests are reportable to Toronto Public Health
To order the TB skin test ruler,
Call the TB Prevention and Control Program at
416-338-7600
or e-mail targettb@toronto.ca
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