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.
This skin test should be read in 48-72 hours. If it is negative, you should repeat this process three months after the exposure. If you are exposed to someone with infectious tuberculosis and have had a positive reaction to the TB skin test in the past, you should not repeat it since it should still remain positive.f you are exposed to someone with infectious tuberculosis and have never had a positive reaction to the tuberculin (TB) skin test, you should have a baseline test within 3 months prior to the exposure date.