BACK TOTOP Browse A-ZSearchBrowse A-ZABCDEFGHIJKLMNOPQRSTUVWXYZ0-9 E-mail FormEmail ResultsName:Email address:Recipients Name:Recipients address:Message: Print-FriendlyBookmarksbookmarks-menuUrine pH testpH - urineA urine pH test measures the level of acid in urine. How the Test is Performed After you provide a urine sample, it is tested right away. The health care provider uses a dipstick made with a color-sensitive pad. The color on the dipstick tells the provider the level of acid in your urine. How to Prepare for the Test Your provider may tell you to stop taking certain medicines that can affect the results of the test. These may include:Acetazolamide Ammonium chloride Methenamine mandelate Potassium citrate Sodium bicarbonate Thiazide diuretic DO NOT stop taking any medicine before talking to your provider.Eat a normal, balanced diet for several days before the test. Note that:A diet high in fruits, vegetables, or non-cheese dairy products can increase your urine pH. A diet high in fish, meat products, or cheese can decrease your urine pH. How the Test will Feel The test involves only normal urination. There is no discomfort. Why the Test is Performed Your provider may order this test to check for changes in your urine acid levels. It may be done to see if you:Are at risk of kidney stones. Different types of stones can form depending on how acidic your urine is. Kidney stonesA kidney stone is a solid mass made up of tiny crystals. One or more stones can be in the kidney or ureter at the same time.ImageRead Article Now Book Mark Article Have a metabolic condition, such as renal tubular acidosis. Need to take certain medicines to treat urinary tract infections. Some medicines are more effective when urine is acidic or non-acidic (alkaline). Normal Results The normal values range from pH 4.6 to 8.0.The examples above are common measurements for results of these tests. 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 high urine pH may be due to:Kidneys that do not properly remove acids (renal tubular acidosis) Kidney failure Stomach pumping (gastric suction to remove fluid from the stomach) Urinary tract infection VomitingA low urine pH may be due to:Diabetic ketoacidosis Diarrhea Too much acid in the body fluids (metabolic acidosis), such as diabetic ketoacidosis Metabolic acidosisMetabolic acidosis is a condition in which there is too much acid in the body fluids.ImageRead Article Now Book Mark Article Diabetic ketoacidosisDiabetic ketoacidosis (DKA) is a life-threatening problem that affects people with diabetes. It occurs when the body starts breaking down fat at a r...ImageRead Article Now Book Mark Article Starvation Risks There are no risks with this test.Open ReferencesReferencesBushinsky DA. Kidney stones. In: Melmed S, Auchus RJ, Goldfine AB, Koenig RJ, Rosen CJ, eds. Williams Textbook of Endocrinology. 14th ed. Philadelphia, PA: Elsevier; 2020:chap 32.Fogazzi GB, Garigali G. Urinalysis. In: Feehally J, Floege J, Tonelli M, Johnson RJ, eds. Comprehensive Clinical Nephrology. 6th ed. Philadelphia, PA: Elsevier; 2019:chap 4.Hamm LL, DuBose TD. Disorders of acid-bace balance. In: Yu ASL, Chertow GM, Luyckx VA, Marsden PA, Skorecki K, Taal MW, eds. Brenner and Rector's The Kidney. 11th ed. Philadelphia, PA: Elsevier; 2020:chap 16.Riley RS, McPherson RA. Basic examination of urine. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods. 24th ed. Philadelphia, PA: Elsevier; 2022:chap 29.AllVideoImagesTogFemale urinary tract - illustration The female and male urinary tracts are relatively the same except for the length of the urethra.Female urinary tractillustrationPH urine test - illustration Some types of kidney stones are more prone to develop in alkaline urine and others are more likely to from in acidic urine. Monitoring the urine pH may be helpful in preventing the formation of kidney stones.PH urine testillustrationMale urinary tract - illustration The male and female urinary tracts are relatively the same except for the length of the urethra.Male urinary tractillustrationFemale urinary tract - illustration The female and male urinary tracts are relatively the same except for the length of the urethra.Female urinary tractillustrationPH urine test - illustration Some types of kidney stones are more prone to develop in alkaline urine and others are more likely to from in acidic urine. Monitoring the urine pH may be helpful in preventing the formation of kidney stones.PH urine testillustrationMale urinary tract - illustration The male and female urinary tracts are relatively the same except for the length of the urethra.Male urinary tractillustration Tests for Urine pH test Urine pH testAcid loading test (pH)Related Information Acid loading test (pH)(Medical Test)Kidney stones(Condition)Uric acid - blood (Medical Test)Urinary tract infection - adults(Condition)Gastric suction(Medical Test)Acute kidney failure(Condition)Proximal renal tubular acidosis(Condition)Nausea and vomiting - adults(Symptoms)Chronic obstructive pulmonary disease (COPD)(Condition)Diabetic ketoacidosis(Condition)Kidney stones(In-Depth)Urinary tract infection(In-Depth) Review Date: 7/19/2021 Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team. The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- © 1997- All rights reserved. A.D.A.M. content is best viewed in IE9 or above, Firefox and Google Chrome browser.Content is best viewed in IE9 or above, Firefox and Google Chrome browser.