ASO test

The ASO test is an anti-streptolysin "O" test, and streptolysin is one of the metabolites of hemolytic streptococcus. After infection with this type of streptococci, a large amount of anti-streptolysin "0" (ASO) antibody can be present in the serum. Basic Information Specialist classification: Infectious disease examination and classification: immunological examination Applicable gender: whether men and women apply fasting: not fasting Tips: Pay attention to normal routine and diet before checking. Normal value ASO<400U. Clinical significance Abnormal results: 1 anti-"O" value exceeds 400 units. Prompt over hemolytic streptococcal infection. Therefore, diseases caused by this bacterial infection, such as (scarlet fever, erysipelas, acute nephritis, etc.) will increase the anti-"O" value. There is no specificity due to changes in anti-"0" and erythrocyte sedimentation rate. Even if the patient is resistant to "0". ESR is increasing. Diagnosis of active rheumatism. It should still be considered in conjunction with clinical manifestations. 2 Certain diseases that are not significantly related to hemolytic streptococcus. The anti-"O" value can also be increased. Such as a small amount of hepatitis. Nephrotic syndrome, tuberculosis, connective tissue disease, subacute infective endocarditis, and some patients with allergic purpura. Comprehensive diagnosis should be combined with clinical data. 3 hypercholesterolemia. Macroglobulinemia. Patients with multiple myeloma. ASO can also increase. The person in need of examination has the above symptoms or suspected symptoms. Precautions Taboo before the test: pay attention to normal work and diet. Requirements for inspection: Actively cooperate with the doctor. Inspection process method: 1. Positive serum, negative serum, and a 1:15 diluted patient serum (S1 and S2) were each dropped on 4 slides. 2. Add one drop of hemolysin “o” solution to each drop on each slide and gently shake for one minute to mix thoroughly. 3. Add one drop of ASO latex reagent per drop and gently shake for 3-5 minutes to observe the result. RESULTS: Positive agglutination was positive, ie ASO antibody titer >400 U/ml; no clear agglutination was negative. Not suitable for the crowd Generally no taboos. Adverse reactions and risks There are no related complications and hazards.

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