Most patients with kidney disease occur unknowingly. Kidney disease starts insidiously, and when there are obvious symptoms appear, the lesions may already be obvious. So, how can you find out you have kidney disease at a much earlier stage? Pay attention to your urine! The earliest change of any kidney disease appears in the urine. These include: proteinuria, hematuria and tubular urine, etc. At this time, patients can be completely asymptomatic, and if urine tests are performed frequently, nephritis can be detected early. Urine tests are easy to perform and inexpensive. Please add urine tests to your annual physical examination. Patients with nephritis often find that their eyelids are mildly puffy when they wake up in the morning, which can subside after a few hours, but they cannot be distinguished from eyelid puffiness caused by falling asleep, lack of sleep or staying up late. In this case, you should go for a urine test to differentiate between nephritis and nephrolithiasis, so don’t take it lightly.