How to check if there is no kidney stone

When there are no kidney stones, examinations can assess kidney health through imaging tests, laboratory diagnosis and physical examinations. They are mainly used to detect other potential kidney diseases early or to confirm the stone-free status. Commonly used examination methods include ultrasound, urine analysis and blood tests.

1. Imaging examination

Currently, the detection of most kidney lesions or stones relies on imaging. The preferred examination is renal ultrasound, which is non-invasive and convenient, and can clearly show the kidney structure and whether there are stones or other abnormalities. If the ultrasound results are still not clear enough, further examination with CT scan is recommended, which can more accurately locate tiny stones and clarify kidney lesions. Intravenous urography IVU is also a traditional but effective way to exclude kidney stones, mainly used to detect urinary tract obstruction or dysfunction. Imaging examinations are very important when there are no symptoms and can help screen for hidden stones or early lesions.

2 Urinalysis

Urine examination is indispensable in the assessment of kidney health. Urinalysis tests can evaluate urine pH, calcium, oxalate, uric acid and other indicators, which can help determine the risk of asymptomatic "microcrystals". For example, if urine calcium and urine oxalate are too high, it may predict the risk of kidney stones in the future. Whether red blood cells, white blood cells or protein are mixed in the urine can also reflect hidden stones, kidney damage or infection. It is generally recommended to collect urine for 24 hours for a more comprehensive health assessment.

3. Blood Test

Indicators such as electrolytes, creatinine and urea nitrogen in the blood can reflect whether kidney function is normal. If the uric acid level is found to be abnormally high, it often indicates a tendency to uric acid stones, and may also be a precursor to gout-related problems. Abnormal metabolism of calcium and phosphorus may indicate the risk of stones or systemic diseases, such as hyperparathyroidism. Early detection and intervention can be achieved through regular blood tests.

4Physical examination and symptom assessment

Although you can live a normal life without kidney stone symptoms, a physical examination and a doctor's interview are still necessary. If you have intermittent back pain, abnormal urine color, or discomfort related to urination, even if kidney stones have not been diagnosed, it may still indicate a disease related to kidney problems. It is recommended that the doctor conduct further examinations based on the symptoms.

Even if you don't have kidney stones, you should still pay attention to kidney health management. Regular checkups and health conditioning, such as drinking enough water, limiting sodium intake, and reducing high-oxalate foods, can effectively reduce the risk of urinary stones and maintain good kidney function. Ensuring health starts with checkups.