What is a common use of a urinalysis in medical practice?

A urinalysis is a common diagnostic tool used in medical practice primarily to assess kidney health. This test involves analyzing urine to identify a range of markers that can indicate the presence of diseases, both renal and systemic. For instance, the presence of proteins, red blood cells, or elevated levels of creatinine can suggest issues such as kidney damage or dysfunction.

In addition to kidney assessment, urinalysis can also provide insights into hydration status, metabolic conditions, and urinary tract infections. By examining various components such as pH, specific gravity, glucose, and ketones, healthcare providers can gain valuable information about a patient's overall health and specific organ function.

In contrast, the other options point to different diagnostic tools or methods. Skin conditions require dermatologic assessments, measuring blood pressure is done using sphygmomanometry, and heart function checks typically involve electrocardiograms or echocardiograms. Therefore, the use of urinalysis is specifically aligned with evaluating kidney health, reinforcing its role in medicine as a vital assessment method.