What is the most accurate test for kidneys

The most accurate way to determine the cause of a patient’s kidney disease is to do a kidney puncture biopsy.
The results of renal puncture are known as the gold index for the diagnosis of kidney disease. Renal puncture biopsy can clarify the diagnosis, revise the clinical diagnosis of the patient, and also modify the clinical treatment plan of the patient to provide a more accurate prognosis assessment for the patient, so renal puncture has great clinical significance.
However, there are many contraindications to renal puncture, such as bleeding tendency, hypertension, mental illness and other patients are contraindicated, renal tumors, ascites, renal abscess, renal tuberculosis and other relative contraindications to renal puncture.
Preoperative attention should be paid to the fact that the day of the operation should not be on an empty stomach, and it is necessary to eat a semi-liquid diet, such as wontons, small soup dumplings, etc., but not to eat too much. Let the patient practice inhalation and then breath-holding movements before the operation, which is conducive to postoperative recovery. Patients who cannot get out of bed after surgery need to be told to practice eating and urinating and defecating in bed.
It is recommended that patients who need to improve the kidney-related examination should go to the hospital in time and have the examination under the guidance of professional doctors.