You should fast before tests. It works for me. It all depends on what sort of test you are undergoing. with some tests it is required yet with other tests you should eat as you would normally to get...
No, you do not. A TB test is a skin test placed in your forearm. You must return to have the test read 2-3 days after it is placed. Do not scratch the TB test or it will turn red. Only your nurse,...