You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is True statement about antistreptolysin ‘O’ titre is : and explain in detail?
ASO (Anti Streptolysin ‘O’) titre :
Estimation of antibody against streptolysin is a standard serological test for retrospective diagnosis of streptococcal infection
ASO titre > 200 are indicative of prior streptococcal infection
Raised after throat infection only
In acute glomerulonephritis the titre is low