The testing is not painful. A tiny comb gently scratches or abrades the skin surface. After the test is performed, it takes about 15 minutes to develop. A positive test will appear as a raised, red bump on the skin, similar to a mosquito bite.
The testing is not painful. A tiny comb gently scratches or abrades the skin surface. After the test is performed, it takes about 15 minutes to develop. A positive test will appear as a raised, red bump on the skin, similar to a mosquito bite.