Lit-Control® pH Sensor

Make sure you have the “T” cup with the urine sample inside and that it contains at least the minimum required amount. After completing the calibration process, when the “T” symbol appears on the display, unscrew the device from the “C” cup and screw it onto the “T” cup containing the urine sample. Gently shake the device for 5 seconds and press the button once to start the measurement. While the process is running, a moving dot will appear below the “T” symbol. If the measurement is successful, the pH result will be displayed on the screen.

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.

There are currently two 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.

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.

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.