Levels of uric acid are taken as diagnostic value in following diseases:
**Core Concept**
The diagnostic value of uric acid levels lies in its association with various metabolic and kidney-related disorders. Elevated uric acid levels can indicate conditions such as gout, kidney stones, and kidney disease, whereas decreased levels may be seen in conditions like leukemia and lymphoma.
**Why the Correct Answer is Right**
Uric acid is a byproduct of purine metabolism, and its levels are influenced by factors like diet, kidney function, and metabolic rate. In conditions like gout, uric acid crystals deposit in the joints, leading to inflammation and pain. Elevated uric acid levels can also be seen in kidney disease, where impaired renal function reduces the excretion of uric acid. In contrast, leukemia and lymphoma can lead to decreased uric acid levels due to increased cellular turnover and consumption of uric acid as a byproduct of nucleic acid metabolism.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect as it does not specify any disease condition related to uric acid levels.
* **Option B:** This option is incorrect as it does not provide a clear association with uric acid levels.
* **Option C:** This option is incorrect as it does not specify any disease condition related to uric acid levels.
**Clinical Pearl / High-Yield Fact**
A useful mnemonic to remember the conditions associated with elevated uric acid levels is "GOUT": Gout, Obesity, Underexcretion of uric acid, Toxicity, and Kidney disease.
**Correct Answer:** C. Gout