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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Positive 20 ASO In Lab Test?

Hello doctor, my 12 yrs old daugther,had a positive 20 ASO lab test and she always have a very sensitive skin that even she just scratch a bit it easily injured and her feet came out like rashes it's always occur during rainy season.. I always bring her to the dermatologist but it doesn't help her situation, until we brought her to her latest doctor and find out her lab test of ASO.. Thanks and more power.!
Mon, 14 Jul 2014
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Infectious Diseases Specialist,  's  Response
ASO is anti streptolysin O antigen. It is positive in streptococcal infection. Titre of greater Than 200 units/ml is consider to be positive. rheumatic fever, post streptococcal glomerulonephritis, scarlet fever, erysipelas. The causative agent for skin infection is probably streptococcus. As you have started treatment and did not responded to it, you should start with it broad spectrum antibiotics like linezolid, vancomycin.
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What Causes Positive 20 ASO In Lab Test?

ASO is anti streptolysin O antigen. It is positive in streptococcal infection. Titre of greater Than 200 units/ml is consider to be positive. rheumatic fever, post streptococcal glomerulonephritis, scarlet fever, erysipelas. The causative agent for skin infection is probably streptococcus. As you have started treatment and did not responded to it, you should start with it broad spectrum antibiotics like linezolid, vancomycin.