Depends: All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Having said that, ASO reflects prior infection with Streptococci. It is one of the tests for diagnosing rheumatic fever. Note that it is only of the criteria. Your titer means you had an infection with streptococci, but many people have had strep throat.
Answered 10/25/2015
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