Laboratory surveillance
According to the directives of the Taiwan Guidelines for TB Diagnosis & Treatment , a basic laboratory survey, including measurements of complete blood count with differential count, tests of liver function (aspartate transaminase, alanine transaminase, and total bilirubin), and tests of renal function (blood urea nitrogen, creatinine, and uric acid), must be performed before initiating anti-TB treatment and at 2, 4, and 8 weeks after initiating anti-TB treatment [17]. Further laboratory surveys are allowed if the primary care physician deems it to be necessary.