X hits on this document

PDF document

New Diagnostics in Tuberculosis: Interferon - page 5 / 38

86 views

0 shares

0 downloads

0 comments

5 / 38

Tuberculin Skin test

z False positive tests occur because of previous BCG vaccine or exposure to non tuberculous mycobacteria.

z False negatives occur because of T cell mediated immune deficiency due to drugs or disease.

z Up to 30% of patients with active TB will have a negative skin test making it poor for diagnostic purposes.

z Administered intradermally and then read in 48-72 hours requiring the patient to return for a reading.

z Both administration and the reading itself requires skill to be performed correctly.

Document info
Document views86
Page views86
Page last viewedMon Dec 05 05:05:43 UTC 2016
Pages38
Paragraphs391
Words1730

Comments