Citric acid urine test

定义

Citric acid urine test measures the level of citric acid in urine.

Alternative Names

Urine - citric acid test; Renal tubular 酸中毒 - citric acid test; Kidney stones - citric acid test; Urolithiasis - citric acid test

How the Test is Performed

You will need to collect your urine at home over 24 hours. Your health care provider will tell you how to do this. Follow instructions exactly so that the results are accurate.

How to Prepare for the Test

No special preparation is necessary for this test. But the results are affected by your 饮食, and this test is usually done while you are on a normal 饮食. Ask your provider for more information.

How the Test will Feel

The test involves only normal urination, and there is no discomfort.

Why the Test is Performed

The test is used to diagnose renal tubular 酸中毒 和评估 肾脏 石头疾病.

Normal Results

The normal range is 320 to 1,240 mg per 24 hours.

Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or test different samples. Talk to your provider about the meaning of your specific test results.

What Abnormal Results Mean

A low level of citric acid may mean renal tubular 酸中毒 and a tendency to form calcium 肾脏 stones.

The following may decrease urine citric acid levels:

• Long-term (chronic) 肾脏 failure
• 糖尿病
• Excessive muscle activity
• Medicines called angiotensin converting enzyme (ACE) inhibitors
• Parathyroid glands do not produce enough of its hormone (hypoparathyroidism)
• Too much acid in the body fluids (酸中毒)

The following may increase urine citric acid levels:

• 一个高 碳水化合物 饮食
• Estrogen therapy
• 维生素D

风险

There are no risks with this test.

参考文献

迪克森石油. Renal tubular 酸中毒. In: Kliegman RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, eds. Nelson Textbook of Pediatrics. 21艾德. Philadelphia, PA: Elsevier; 2020:chap 547.

Oh MS, Briefel G, Pincus MR. Evaluation of renal function, water, electrolytes, and acid-base balance. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods. 24日艾德. Philadelphia, PA: Elsevier; 2022:chap 15.

Pearle MS, Antonelli JA, Lotan Y. Urinary lithiasis: etiology, epidemiology, and pathogenesis. In: Partin AW, Dmochowski RR, Kavoussi LR, Peters CA, eds. Campbell-Walsh-Wein Urology. 12日艾德. Philadelphia, PA: Elsevier; 2021:chap 91.