What is the PH? What is ph level in urine?
What is the PH?
pH (potential of hydrogen) is a measure of the acidity or alkalinity of a solution. It is measured on a scale of 0 to 14—the lower the pH the more acidic the solution, the higher the pH the more alkaline (or base) the solution. When a solution is neither acid nor alkaline it has a pH of 7 which is neutral.
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- The range is 4.5 to 8, but urine is commonly acidic (ie 5.5-6.5) due to metabolic activity.
- Acidic urine (low pH) may be caused by diet (eg, acidic fruits such as cranberries) and uric acid calculi.
- Urine pH generally reflects the blood pH but in renal tubular acidosis (RTA) this is not the case. In type 1 RTA (distal) the urine is acidic but the blood alkaline. In type 2 (proximal) the urine is initially alkaline but becomes more acidic as the disease progresses. Alkaline urine (high pH) is seen in the initial stages of type 2 RTA and also with infection with urease-splitting organisms, and may be associated with the formation of stag-horn calculi.
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