Antistreptolysin, also known as anti-streptolysin O (ASO), is a specific antibody produced by the human immune system in response to infection by group A Streptococcus bacteria. It is primarily used as a diagnostic tool to detect the presence of streptococcal infections, such as strep throat or rheumatic fever. The ASO test measures the concentration of this antibody in the blood, which can help determine if a person has been exposed to the bacteria and if they are at risk for developing complications from the infection. High levels of ASO indicate a recent or active infection, while low levels suggest that the infection has resolved or that the person has not been exposed to the bacteria.
The CAS Registry Mumber 9006-92-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 9,0,0 and 6 respectively; the second part has 2 digits, 9 and 2 respectively. Calculate Digit Verification of CAS Registry Number 9006-92: (6*9)+(5*0)+(4*0)+(3*6)+(2*9)+(1*2)=92 92 % 10 = 2 So 9006-92-2 is a valid CAS Registry Number.