Dear patients, good afternoon, the weather has been in an unstable state recently, here is a special reminder: everyone pay attention to keep warm. I believe that many friends have seen more than some news about hospital misdiagnosis that caused the patient’s condition to worsen or even die, the diagnosis of disease treatment is the most beginning and the most critical part, the correct diagnosis of kidney disease is conducive to symptomatic treatment, symptomatic treatment to better treat the disease. Many friends are suspecting their kidney problems, what are the factors that affect kidney function test? There are 5 factors that affect the kidney disease test, we need to pay attention to, the next to give you one by one, in order to check the accuracy, I hope we can all cooperate. Factor 1: Pay attention to rest and avoid strenuous exercise to reduce the excessive decomposition of creatine. Factor 2: Avoid drinking a lot of alcohol, exertion and over-eating meat before the test, and have a light diet. Patients with blood tests for kidney function must abstain from meat for 3 consecutive days, and the daily protein intake should be less than 40 grams. Factor 3: Blood urea nitrogen and blood creatinine measurement, blood creatinine measurement is of greater clinical significance for intermediate and advanced kidney disease. Blood creatinine concentration is less affected by diet and other factors, and when it is significantly elevated, it indicates poor prognosis. Factor 4: Endogenous creatinine clearance test. When the subject undergoes this renal function test, he or she should consume a low-protein diet for a total of three days before and on the test day, abstain from meat, and avoid strenuous exercise. The urine was drained at 8:00 a.m. on the test day and then collected in a clean container with toluene preservative for 24 hours from then until 8:00 a.m. the next morning. On the test day, 2-3 ml of venous blood was drawn, and both blood and urine were sent for testing. Factor 5: Phenol red (PSP) excretion test, before doing the kidney function test, you should not take aspirin, penicillin and other drugs. Diuretic beverages such as tea and coffee should be avoided before and during the test. Patients should be instructed to go to urinate 20 minutes before the test, then drink 300-400 ml of water, and no more water later. Warm reminder: kidney disease patients in this deteriorating weather, must pay attention to keep warm, must not catch a cold, once the cold will be inflammatory, have an impact on the disease.