Lit-Control ® pH Sensor

1. Make sure you have the “T” cup with the urine sample inside and with the minimum amount indicated.
2. After performing the calibration process, when the “T” symbol appears on the screen, unscrew the device from the cup “C” and screw it onto the cup “T” with the urine sample.
3. Gently shake the device for 5 seconds.
4. Press the button once to start the urinary pH measurement.
5. While the measurement is taking place, a moving dot will appear under the “T” symbol. Wait a few seconds, and if the measurement is correct, the pH result will appear on the screen.

Urinary pH is an indicator of the acidity or alkalinity of urine and provides information about the general state of health of our body. The average pH value is around 6.2. However, due to its fluctuating behavior, it can range from 4.5 to 8, depending largely on diet, waste products, metabolic disorders, and other causes.

There are currently two options for monitoring urinary pH: by test strip or by laboratory pH meter. The former are widely questioned by the medical community due to their low precision and reliability for clinical decision-making; while the latter lacks the portability necessary for urinary pH measurement to be carried out on fresh urine that has recently been voided, which is the one with physiological value.

• If crystals are present in the urine and the urinary pH is above 6.2, the appropriate conditions exist for the formation of infectious stones, calcium phosphate stones, or calcium phosphate-induced calcium oxalate stones.
• If crystals are present in the urine and the urinary pH is below 5.5, the appropriate conditions exist for the formation of cystine or uric acid stones, or uric acid-induced calcium oxalate stones.
• In certain cases, or without any alteration in pH, the simple existence of crystals and the lack of physiological inhibitors of this crystallization can promote the formation of kidney stones.

Correct control of urinary pH will reduce the risk of kidney stone formation.

After the placement of a urinary catheter or double-J catheter, urinary tract infection tends to appear, which can cause alkaline urine in most cases. If the infection persists, due to, among other things, the presence of crystals in the urine and an alkaline pH, it could lead to calcification of the catheter or catheter, even leading to obstruction and in some cases making its removal difficult.