An Anti-Streptolysin O Enzyme Inhibition Test Was Performed on the Serum

Multiple Choice

An anti-streptolysin O enzyme inhibition test was performed on the serum of a 10-year-old female patient with the following results: no hemolysis in the 1:10,1:20,1:40,and 1:80 tubes; hemolysis in the 1:160,1:320,and 1:640 tubes.What conclusion can you draw from these results?

A) The titer is 1:640, and the patient may have glomerulonephritis.
B) The titer is 1:160, and the patient may have rheumatic fever.
C) The titer is 1:80, and the patient is normal.
D) The test is invalid and must be repeated.