Exploring Key Kidney Function Tests" delves into vital assessments like the Serum Creatinine Test, which gauges muscle metabolism's byproduct in blood, aiding in kidney health evaluation. The Glomerular Filtration Rate (GFR) Test calculates blood waste filtration efficiency, pivotal for early disease detection. Blood Urea Nitrogen (BUN) Test measures urea's nitrogen levels, linked to protein breakdown, highlighting potential kidney problems. Urinalysis assesses urine composition for indicators like protein and blood cells, crucial for diagnosing kidney issues early on.