Anti-streptococcal hemolysin 576 is abnormal and above the normal range. 1. The normal value of anti-streptococcal hemolysin in adults is 0-200 UI/ml, and the normal value of anti-streptococcal hemolysin in children is 0-250 UI/ml. 2. Common causes of elevated anti-streptococcal hemolysin include acute pharyngitis with streptococcal infection, scarlet fever, and acute glomerulonephritis. (1) Acute pharyngitis with streptococcal infection: high fever, sore throat, difficulty in swallowing, even with earache, and elevated anti-streptococcal hemolysin value in laboratory examination. (2) Scarlet fever: it is caused by group A streptococcus infection, commonly manifested as red rash, strawberry tongue, lymphatic swelling, fever, etc. Laboratory tests will also show elevated anti-streptococcal hemolysin value. (3) Acute glomerulonephritis: often secondary to skin and throat streptococcal infections, followed by hypertension, edema, and electrolyte disorders, and elevated antistreptococcal hemolysin values in laboratory tests. There may be other reasons for elevated anti-streptococcal hemolysin. If elevated anti-streptococcal hemolysin occurs, it is recommended to go to the hospital in time to find out the cause of the disease and treat the symptoms.