1 Charge costs to cost objects. 2  Use an activity driver to allocate the contents of each primary cost pool to cost objects. 3  There will be a separate activity driver for each cost pool.
1 People who have a positive TB skin test with a normal chest X-ray are NOT contagious, but may need medicine to prevent them from ever getting active TB. 2  Children under the age of 12 with active TB are rarely contagious, and do not need to be kept out of school.ow often does a TB test have to be repeated? If you have a negative skin test, you need a repeat test at least every four years. If you have a documented positive skin test, you must have an initial chest X-ray. After that, you still need to be screened every four years.
From infection to development of a positive TB skin test reaction (the incubation period) is approximately 2 to 12 weeks.The risk for developing active disease is the highest in the first two years after infection and development of a positive TB skin test reaction.fter an exposure to infectious tuberculosis, a TB skin test reaction of 5 mm induration or greater is considered positive. You will then be evaluated for signs and symptoms of active tuberculosis (cough lasting for more than three weeks, bloody sputum, fever, night sweats, weight loss, loss of appetite, fatigue).