A nurse is caring for a child who was admitted with suspected rheumatic fever. The provider prescribes an anti-streptolysin O (ASO) titer. The parent asks the nurse the purpose of the test. What should the nurse respond?

“This test will indicate if your child has rheumatic fever.”.

“This test will confirm if your child had a recent streptococcal infection.”.

“This test will indicate if your child has a therapeutic blood level of an aminoglycoside.”.

“This test will confirm if your child has immunity to streptococcal bacteria.”.