A urine pH test measures the level of acid in urine.
pH – 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 the dipstick changes to tells the provider the level of acid in your urine.
If needed, the health care provider may ask you to
How to Prepare for the Test
Your health care provider may tell you to stop taking certain medicines that can affect the results of the test. These may include:
- 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 citrus fruits, vegetables, or dairy products can increase your urine pH.
- A diet high in meat products or cranberries 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 doctor may order this test to check for changes in your body’s acid levels.It may be done to see if you:
Are at risk of
Need to take certain medicines to treat
The normal values range from pH 4.6 to pH 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 doctor about the meaning of your specific test result.
What Abnormal Results Mean
A high urine pH may be due to:
- Kidneys do not properly remove acids (kidney tubular acidosis, also known as renal tubular acidosis)
- Kidney failure
- Stomach pumping (gastric suction)
- Urinary tract infection
A low urine pH may be due to:
- Diabetic ketoacidosis
- Too much acid in the body fluids (
metabolic acidosis), such as diabetic ketoacidosis)
There are no risks with this test.