whitening test

The whitening test is a test of scarlet heat red rash regression, which is an acute respiratory infection caused by hemolytic streptococcus, which can also cause tonsillitis, erysipelas, rheumatic fever, endocarditis and local infections. Fever, angina, diffuse scarlet rash and rash after skin retreat, whitening experiment even if the red rash turned white into normal skin color experiment. Basic Information Specialist classification: Infectious disease examination and classification: immunological examination Applicable gender: whether men and women apply fasting: not fasting Analysis results: Below normal: Normal value: no Above normal: negative: After eliminating false negatives, it is not considered to be scarlet fever. Positive: Scarlet fever. Tips: This test should be carried out at the beginning of the rash. Normal value The erythema of the skin at the injection site subsided and turned white, which was positive for the test. Local rashes injected did not resolve negative. Clinical significance Abnormal results of fever, angina, diffuse scarlet rash, and rash back to skin desquamation. The people in need of inspection are suspected of scarlet fever. Positive result may be disease: Scarlet fever precautions Contraindications before examination: This test should be performed at the beginning of the rash. After the rash 3d-4d, the scarlet fever toxin has been combined with the tissue cells, and the antitoxin cannot be neutralized. At this time, the test can be performed, and false negatives can occur. Requirements for inspection: Actively cooperate with the doctor. Inspection process The rash was selected in a dense place, disinfected with ethanol, and then intradermally injected with 0.2 ml of scarlet red rash toxin, and the local skin reaction was observed after 6h-12h. Not suitable for the crowd Skin infections. Adverse reactions and risks Generally not.