Biurette test is mainly done for:
**Core Concept**
The Biurette test is a chemical test used to detect the presence of glucose in blood or other bodily fluids. It is based on the reaction between glucose and oxygen in the presence of an enzyme called glucose oxidase, resulting in the formation of gluconic acid and hydrogen peroxide.
**Why the Correct Answer is Right**
The Biurette test is specifically used to detect glucose in urine, which is an indicator of diabetes mellitus or other conditions where glucose is being excreted in the urine. The test relies on the enzyme glucose oxidase to catalyze the oxidation of glucose, producing hydrogen peroxide, which is then measured to indicate the presence of glucose. This test is useful in clinical settings to quickly screen for glucose in urine, especially in patients with symptoms suggestive of diabetes.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the Biurette test is not primarily used for detecting lactose or other sugars in bodily fluids.
**Option B:** This option is incorrect because the Biurette test is not used for detecting bilirubin or other bile pigments in urine.
**Option C:** This option is incorrect because the Biurette test is not used for detecting protein or other substances in urine.
**Clinical Pearl / High-Yield Fact**
The Biurette test is a simple and rapid test that can be used to screen for glucose in urine, but it should not be relied upon as the sole diagnostic criterion for diabetes mellitus. A confirmed diagnosis of diabetes requires more comprehensive testing, including measurement of blood glucose levels.
**Correct Answer:** D.