Urine pH Test – Indications, Procedures, Results

Last updated: February 8, 2026 Medically reviewed by: RxHarun Orthopedic Specialist Doctor Reading time: 2 min read

pH – urine

A 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 change on the dipstick tells the provider the level of acid in your urine.

If needed, the provider may ask you to collect your urine at home over 24 hours. Your provider will tell you how to do this. Follow instructions exactly so that the results are accurate.

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.
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 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 results.

What Abnormal Results Mean

A high urine pH may be due to:

Kidneys that do not properly remove acids (kidney tubular acidosis, also known as renal tubular acidosis)
Kidney failure
Stomach pumping (gastric suction)
Urinary tract infection
Vomiting

A low urine pH may be due to:

Diabetic ketoacidosis
Diarrhea
Too much acid in the body fluids ( metabolic acidosis ), such as diabetic ketoacidosis
Starvation

Risks

There are no risks with this test.

Frequently Asked Questions

Is this article a replacement for a doctor?

No. It is educational content only. Patients should consult a qualified clinician for diagnosis and treatment.

When should I seek urgent care?

Seek urgent care for severe symptoms, rapidly worsening condition, breathing difficulty, severe pain, neurological changes, or any emergency warning sign.

References

Add references, clinical guidelines, textbooks, journal articles, or trusted medical sources here. You can edit this area later with a custom field named _rx_references.

Written by Dr. Harun Ar Rashid, MD - Arthritis, Bones, Joints Pain, Trauma, and Internal Medicine Specialist

Dr. Md. Harun Ar Rashid, MPH, MD, PhD, is a highly respected medical specialist celebrated for his exceptional clinical expertise and unwavering commitment to patient care. With advanced qualifications including MPH, MD, and PhD, he integrates cutting-edge research with a compassionate approach to medicine, ensuring that every patient receives personalized and effective treatment. His extensive training and hands-on experience enable him to diagnose complex conditions accurately and develop innovative treatment strategies tailored to individual needs. In addition to his clinical practice, Dr. Harun Ar Rashid is dedicated to medical education and research, writing and inventory creative thinking, innovative idea, critical care managementing make in his community to outreach, often participating in initiatives that promote health awareness and advance medical knowledge. His career is a testament to the high standards represented by his credentials, and he continues to contribute significantly to his field, driving improvements in both patient outcomes and healthcare practices. Born and educated in Bangladesh, Dr. Rashid earned his BPT from the University of Dhaka before pursuing postgraduate training internationally. He completed his MD in Internal Medicine at King’s College London, where he developed a special interest in inflammatory arthritis and metabolic bone disease. He then undertook a PhD in Orthopedic Science at the University of Oxford, conducting pioneering research on cytokine signaling pathways in rheumatoid arthritis. Following his doctoral studies, Dr. Rashid returned to clinical work with a fellowship in interventional pain management at the Rx University School of Medicine, refining his skills in image-guided joint injections and minimally invasive pain-relief techniques.