Tests for renal tubular damage include proximal renal tubule function test, distal renal tubule function test and so on. 1. Proximal renal tubule function test: proximal renal tubule mainly plays the function of reabsorption, damaged proximal renal tubule will have reabsorption dysfunction, so it is necessary to test the urinary β2-microglobulin, α1-microglobulin, retinol-binding protein and so on. 2. Distal renal tubule function test: the distal renal tubule is mainly involved in the concentration and dilution of urine, the distal renal tubule damage will have concentration and dilution dysfunction, so it is necessary to test the specific gravity of day and night or 3 hours, urine osmolality measurement. If patients have any discomfort, they should go to regular hospitals in time, consult with specialists and choose reasonable examination programs.