Which blood test is primarily used to assess kidney function?

The Basic Metabolic Panel (BMP) is primarily used to assess kidney function because it includes measurements of essential electrolytes, blood urea nitrogen (BUN), and creatinine. BUN and creatinine are particularly important as they provide specific insights into how well the kidneys are filtering waste from the blood. Elevated levels of these substances can indicate impaired kidney function or kidney disease, making the BMP a critical tool for healthcare professionals in evaluating renal health.

In contrast, the other tests listed serve different purposes. Thyroid Function Tests primarily evaluate thyroid hormone levels, Liver Function Tests focus on liver health and enzymes, and the C-reactive Protein Test is used to assess inflammation in the body, none of which directly assess kidney function.