Ph24hurstrip
A test that measures the acidity or alkalinity of your urine over a 24-hour period to help evaluate kidney function and acid-base balance.
{"The test measures urine pH to check your body's acid-base balance","Urine pH normally ranges from 4.5 to 8 depending on diet and health","Abnormal pH levels may indicate kidney stones, infections, or metabolic disorders","Sample is collected over 24 hours in a special container","Diet, medications, and certain health conditions can affect results"}
Key facts at a glance
- LOINC
- 50897-8
- Short code
- Urine pH 24hr
- Synonyms
- pH 24h Ur Strip
- Category
- chemistry
- Sample
- serum
- Container
- 24-hour urine collection container (plastic, graduated) with or without preservative
- Units
- not specified
- Ref low
- 4.5
- Ref high
- 8
- Critical range
- 4.5 not specified – 9 not specified
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- ≥ 0 years
- Method
- test-strip
- CPT
- 81001 (Urinalysis, non-automated, without microscopy) or 81003 (automated)
- SNOMED
- 271710005
- Specimen volume
- Minimum 10 mL aliquot from 24-hour collection required for analysis
- Stability
- Urine pH stable for 1-2 hours at room temperature. If testing delayed beyond 2 hours, refrigerate at 2-8°C. Do not freeze. Test within 24 hours of collection completion.
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 1–4 hours
- Order
- routine
What is this test?
The 24-hour urine pH test measures the acidity or alkalinity (pH level) of your urine collected over a 24-hour period. pH is a scale from 0 to 14 that indicates how acidic (low pH) or alkaline (high pH) a substance is. Your body maintains a delicate balance of acids and bases, and urine pH can reflect changes in this balance caused by diet, medications, or underlying health conditions.
How is the sample collected?
You will receive a special container from your healthcare provider. On the day of collection, start by urinating into the toilet when you wake up. For the next 24 hours, collect all urine in the container. Keep the container refrigerated or in a cool place. Return the complete collection to the laboratory as instructed.
What do the results mean?
Normal urine pH typically ranges from 4.5 to 8. A pH below 7 indicates acidic urine, while a pH above 7 indicates alkaline urine. Your result is interpreted along with your symptoms, diet, and other test results to help your doctor understand your health status.
Reference range
4.5-8.0not specified
Collect all urine over exactly 24 hours in a clean container; refrigerate during collection. No fasting required.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Frequently asked questions
Does my diet affect urine pH?
Do I need to fast before this test?
Can medications affect my urine pH?
What happens if my urine pH is abnormal?
Sources
- 1
- 2
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy