Renal function tests include broad renal function tests and narrow renal function tests. The specific test items are as follows:
1. Narrow sense renal function test: just check the levels of blood urea nitrogen and creatinine in serum;
2. Generalized renal function test: not only include blood urea nitrogen and creatinine levels, but also blood biochemical levels, blood lipid levels, and blood complement C3, C4 and other immunological indicators.
Renal function examination also includes the examination of protein, red blood cells, white blood cells, and pH in routine urine, including the examination of urinary albumin and creatinine ratio, and the examination of urinary renal tubular function. It also includes imaging studies of the kidneys, such as urological examinations and renal CT scans. When necessary, bilateral lower extremity vascular ultrasonography and abdominal ultrasonography are required for differential diagnosis. Therefore, blood renal function test is an item of renal function test, which also includes urine test and imaging test.