II. Interpretation
- Normal pH: 4.5-8.0 (usually 5.5 to 6.5)
III. Background
- Urine pH reflects serum pH except with Renal Tubular Acidosis (RTA)
- In Renal Tubular Acidosis (RTA), Urine pH >5.5
- Urine cannot be acidified despite acid load
IV. Causes: Increased Urine pH (Alkalotic urine)
- Stale sample with high ammonia content (Very high pH)
- Void testing if old sample
- Bacteriuria or Urinary Tract Infection
-
Urolithiasis
- Calcium Phosphate Calculi
- Struvite Calculi (infected stones, Magnesium-ammonium phosphate stones)
- Vegetarian Diet
- High citrate diet
- Renal Failure
- Renal Tubular Acidosis (Type 1)
- Drugs
- Antibiotics
- Bicarbonate (e.g. Excessive Antacid Use)
- Carbonic Anhydrase Inhibitor (e.g. Acetazolamide)
- Potassium Citrate
- Sodium Citrate
V. Causes: Decreased Urine pH (Acidic urine)
- Acidosis (Acidemia)
- Diabetic Ketoacidosis
- Starvation Ketosis
- Diarrhea
- Urolithiasis
- Acidic fruits (Cranberry)
- High Protein diet
- Drugs
- Ammonium chloride
- Methenamine
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Related Studies
Concepts | Laboratory Procedure (T059) |
SnomedCT | 167315000, 144552004, 144542003, 167305006 |
English | urine pH, Urine pH NOS, Urine pH measurement, Urine pH, pH urine, ph urine test, urine ph test, ph urine, urine ph, Urine pH NOS (procedure), Urine pH NOS (observable entity), Urine pH Measurement, Urine pH test, Urine pH test (procedure) |
Italian | pH urinario |
Dutch | urine pH, pH urine |
French | pH des urines, pH urinaire |
Portuguese | pH urinário, pH da urina |
Japanese | 尿pH, ニョウpH |
Czech | pH moči |
Hungarian | Vizelet pH |
Spanish | determinación del pH urinario, SAI, determinación del pH urinario, SAI (entidad observable), Urine pH NOS, determinación del pH urinario, SAI (procedimiento), prueba de pH urinario (procedimiento), prueba de pH urinario, pH urinario |
German | pH im Urin |
Ontology: Urine dipstick for pH (C0430382)
Concepts | Laboratory Procedure (T059) |
SnomedCT | 167314001, 144551006, 271348005 |
English | Urine dipstick for pH, Urine dipstick for pH (procedure) |
Spanish | determinación de pH urinario con tira reactiva (procedimiento), determinación de pH urinario con tira reactiva |