A positive RST does not differentiate GAS colonization from infection as is well illustrated by this case.  The RST only detects group A streptococci, but does not, of itself, implicate a causative role in the patient's pharyngitis.  Without clinical correlation based on the clinical findings of GAS pharyngitis a positive RST may mislead the unwary physician to unnecessarily treat colonization rather than infection.  His RST was positive, and he was treated with procaine penicillin and released. 
RST
A positive RST does not differentiate GAS colonization from infection as is well illustrated by this case.  The RST only detects group A streptococci, but does not, of itself, implicate a causative role in the patient's pharyngitis.  Without clinical correlation based on the clinical findings of GAS pharyngitis a positive RST may mislead the unwary physician to unnecessarily treat colonization rather than infection.  His RST was positive, and he was treated with procaine penicillin and released. 
RST
A positive RST does not differentiate GAS colonization from infection as is well illustrated by this case.  The RST only detects group A streptococci, but does not, of itself, implicate a causative role in the patient's pharyngitis.  Without clinical correlation based on the clinical findings of GAS pharyngitis a positive RST may mislead the unwary physician to unnecessarily treat colonization rather than infection.  His RST was positive, and he was treated with procaine penicillin and released. 
RST
His RST was positive, and he was treated with procaine penicillin and released. 
procaine penicillin
His RST was positive, and he was treated with procaine penicillin and released. 
penicillin