Chronic renal failure is a long-term and serious disease, in order to observe the changes of the disease, physicians often ask patients to do some tests regularly. So those tests are necessary, let’s talk about them. Urine routine For patients who still have urine (patients with advanced renal failure often have no urine), if the renal failure is caused by nephrotic syndrome, chronic nephritis, IgA nephropathy and other primary kidney diseases, the urine routine check can understand the development of the underlying kidney diseases for further treatment, such as large amount of proteinuria and hematuria in the urine. Urine routine is usually checked once a month, or once every half month if special requirements. Blood Routine Patients with chronic renal failure usually have anemia, and some of them are quite heavy. Through routine blood tests, doctors can understand the degree of anemia and the causes of anemia, and for patients who are being treated for anemia, they can keep track of the effect of treatment, so as to determine whether the dosage of medication needs to be increased or whether the medication needs to be changed, etc. Generally speaking, for patients treated for severe anemia, routine blood tests can be performed once every half a month, and once every 1 to 2 months when the anemia is corrected and the medication is maintained. Excessively frequent examinations are unnecessary and can lead to chronic blood loss and aggravate anemia. Kidney function (creatinine, urea nitrogen) Regular check of kidney function is necessary, and once a month is usually sufficient for patients with chronic renal failure. Especially for patients without dialysis treatment, through regular kidney function check, it is very important to know how effective the patient’s treatment is; whether the medication needs to be adjusted; whether the patient needs to enter dialysis or kidney transplantation; it can also help the doctor guide the patient’s diet adjustment through the kidney function check. Dialysis patients can use kidney function tests to understand whether dialysis is adequate and help doctors to adjust the dialysis plan in time. Electrolytes It is very necessary to know the electrolyte level regularly, especially for patients with low urine output. Electrolytes are the most important components of environmental balance in the body, and are commonly found in: potassium, sodium, chloride, calcium, phosphorus, etc. Patients with low urine output, for example, are very prone to elevated blood potassium levels, and high blood potassium can lead to cardiac arrest and death. Through the electrolyte examination, the doctor can adjust the treatment plan in time and instruct the patient to maintain the water-electrolyte balance through food adjustment in time. If there is no major change, it is usually checked once a month; if the condition changes, the doctor needs to determine according to the changes. For regular checkups, both patients and doctors should have a correct understanding and judgment. Excessively frequent checkups are not necessary and tend to cause painful checkups and excessive financial burdens for patients, so doctors should pay high attention to patients’ feelings. However, it is also wrong for some patients to refuse regular checkups, or even not to have checkups for a long time, and to treat them blindly, which can easily lead to delaying the disease and not being able to do the right thing, and bring wrong influence to the doctor’s treatment.