The TB blood test can be done instead of a TB skin test (Mantoux). You should have a TB blood (or TB skin test) if you: 1  have HIV infection or your immune system is not very strong.  Children less than 5 years old should have the TB skin test instead of the TB blood test. Ask your health care provider. They will draw a small amount of blood and send it to a laboratory. Your health care provider should tell you if your test result is ânegativeâ or âpositiveâ in a few days.
10 Ways Sugar Harms Your Health. 1  1. Sugar causes blood glucose to spike and plummet. 2  3. Sugar interferes with immune function. 3  3. Romieu, I., Lazcano-Ponce, E., Sanchez-Zamorano, L.M., et al., âCarbohydrates and the Risk of Breast Cancer Among Mexican Women..
The World Health Organisation suggests that adults should eat no more than 50 grams of sugar (12 teaspoons) per day to avoid the risks of obesity and tooth decay.