Which test serves as a confirmatory test for ketones?

The Acetest is indeed recognized as a confirmatory test for ketones in urine. It specifically detects the presence of ketone bodies, such as acetoacetic acid and acetone, indicating a state of ketosis, which can occur in conditions like uncontrolled diabetes mellitus or prolonged fasting. The test is based on a color change when the urine is mixed with a reagent tablet, providing a straightforward and reliable means to confirm ketonuria.

In contrast, the other tests listed do not serve the same purpose. The glycosuria test assesses glucose in the urine, which is unrelated to ketone detection. The Ictotest is a confirmatory test for bilirubin in urine, used primarily in cases of liver dysfunction or hemolysis, but does not provide information on ketone levels. The sulfosalicylic acid test evaluates protein in the urine and is not designed to confirm the presence of ketones. Thus, the Acetest is the appropriate choice for confirming ketone presence in urine samples.