During a TB skin test, a health care professional will wipe the inner forearm with alcohol and let the skin dry. Using a syringe and needle, the health care professional will then inject a small amount of test solution just under the skin. When performed correctly, the injection forms a sm...
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Ten tuberculin units of purified protein derivative were given by needle and syringe; reactions of 3 mm or greater were considered positive. An overall tuberculin positivity rate of 59% was found which varied little with age, sex or village size. Among children who had probably not had BCG ...
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(iv) A short needle, bevel edge outwards and graduated syringe charged with tuberculin attached, is inserted obliquely into the deeper layers of the skin. The dose of tuberculin is then injected." (v) "A correct injection is confirmed by palpating a small pea-like swelli...