The four tests of renal function are usually done through blood test, usually including blood creatinine, blood urea nitrogen, β2-microglobulin, uric acid and so on.
1. Blood creatinine: blood creatinine is the product of human muscle metabolism, which is one of the indicators of renal function, usually the level of blood creatinine can also be used to determine the patient’s glomerular filtration function damage.
2. Blood urea nitrogen: blood urea nitrogen is mainly the end product of protein metabolism, and urea nitrogen can also reflect glomerular filtration function to a certain extent.
3. β2-microglobulin: it can reflect the impaired glomerular filtration function or whether the filtration load is increased.
4. Uric acid: blood uric acid is excreted by the kidneys, and renal function can also be assessed by the value of blood uric acid, and decreased excretion can cause blood uric acid to rise.
Patients should not eat a large amount of protein diet for 3 days before renal function test, take light diet as the main, avoid eating high-fat, high-protein food, to avoid affecting the test results.
It is recommended to go to regular hospitals for renal function tests, and have the test and evaluation results issued by professional doctors. If there is any abnormality, follow the doctor’s instructions for treatment.