Citric acid urine testUrine - citric acid test; Renal tubular acidosis - citric acid test; Kidney stones - citric acid test; Urolithiasis - citric acid test
Citric acid urine test measures the level of citric acid in urine.
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.
Collect your urine at home over 24 hour
The urine 24-hour volume test measures the amount of urine produced in a day. The amount of creatinine, protein, and other chemicals released into t...
How to Prepare for the Test
No special preparation is necessary for this test. But the results are affected by your diet, and this test is usually done while you are on a normal diet. 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
Renal tubular acidosis
Proximal renal tubular acidosis is a disease that occurs when the kidneys don't properly remove acids from the blood into the urine. As a result, to...
The term "renal" refers to the kidney. For example, renal failure means kidney failure. Related topics:Kidney diseaseKidney disease - dietKidney fai...
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 acidosis and a tendency to form calcium kidney stones.
The following may decrease urine citric acid levels:
- Long-term (chronic) kidney failure
- 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 (acidosis)
The following may increase urine citric acid levels:
There are no risks with this test.
Dixon BP. Renal tubular acidosis. In: Kliegman RM, St Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, eds. Nelson Textbook of Pediatrics. 21st ed. Philadelphia, PA: Elsevier; 2020:chap 547.
Oh MS, Briefel G. 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. 23rd ed. Philadelphia, PA: Elsevier; 2017:chap 14.
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. 12th ed. Philadelphia, PA: Elsevier; 2021:chap 91.
Citric acid urine test - illustration
The citric acid test measures citric acid in urine and is used to diagnose renal tubular acidosis and evaluate renal stone disease.
Citric acid urine test
Review Date: 10/8/2019
Reviewed By: Walead Latif, MD, Nephrologist and Clinical Associate Professor, Rutgers Medical School, Newark, NJ. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.