There are many reasons for urinary calculi, but most of them are caused by metabolic reasons, such as hypercalciuria, hyperoxaluria, hyperuricemia, hyperthyroidism and so on. It is an important means to understand the metabolic causes of urinary calculi by observing the changes of related components in urine and blood through laboratory tests. Analysis of the causes of urinary calculi includes the following items:

(1) Blood test: serum electrolytes: potassium, sodium, chlorine, calcium, phosphorus, serum uric acid, renal function, urea nitrogen, creatinine and carbon dioxide binding force.

(2) Urine test: urine routine: PH, SG, WBC, RBC, crystallization. Urine series analysis: urine volume, calcium, phosphorus, magnesium, uric acid, oxalic acid and citric acid.

(3) Stone composition analysis.

Specialized hospitals such as lithiasis hospital can be tested. If it doesn't hurt, take a blood test and urine test.