Positive Tuberculin Skin Test (TST) and Interferon-Gamma Release Assay (IGRA) reporting form Leeds, Grenville and Lanark Counties Home / Organizations and professionals / Health-care providers / Report a disease of public health significance / Positive Tuberculin Skin Test (TST) and Interferon-Gamma Release Assay (IGRA) reporting form Leeds, Grenville and Lanark Counties If you think your patient may have active TB, please call 613-345-5685 or 1-800-660-5853 immediately. All patients with a positive screening result for TB infection— either through a TST or an IGRA—are reportable to public health, regardless of treatment intent. Notice: JavaScript is required for this content.
