Frequently asked questions
What is urinary pH?
Urinary pH is an indicator of the acidity or alkalinity of urine and provides information about the body’s overall health status. The average pH value is around 6.2; however, due to its fluctuating nature, it can range between 4.5 and 8, depending largely on diet, waste products, metabolic changes, and other factors.
How is urinary pH currently monitored?
In addition to Lit-Control® pH Meter, there are two other options: test strips and laboratory pH meters. Test strips are widely questioned by the medical community due to their low accuracy and reliability for clinical decision-making. Laboratory pH meters, on the other hand, lack the portability needed to measure freshly voided urine, which is the most physiologically relevant sample.
How can urinary pH affect kidney stone formation?
If crystals are present in the urine and urinary pH is above 6.2, conditions are favorable for the formation of infection-related stones, calcium phosphate stones, or calcium oxalate stones induced by calcium phosphate. If pH is below 5.5, the formation of cystine stones, uric acid stones, or calcium oxalate stones induced by uric acid is favored. In some cases, the mere presence of crystals and a lack of physiological inhibitors of crystallization may promote kidney stone formation even without pH alteration. Proper urinary pH control can reduce the risk of kidney stone formation.
How can urinary pH affect urinary catheters and stents?
After placement of a urinary catheter or a double-J ureteral stent, urinary tract infection may occur, often leading to alkaline urine. If the infection persists—along with factors such as urinary crystals and alkaline pH—calcification of the catheter or stent may occur, potentially causing blockage and, in some cases, making removal more difficult.
