Uroflowmetry is a common test to evaluate voiding performance and monitor Lower Urinary Tract Symptoms (LUTS). Office-based uroflowmetry has challenges like patient reluctance due to inconvenience, psychological stress, and the need to void in an unaccustomed setup. Portable uroflowmeters have been developed to address these issues. OBJECTIVE: This study aims to validate the newly developed portable uroflowmeter "P-flow" by comparing its results with those obtained using conventional office-based gravimetry uroflowmetry.

P-Flow a novel, portable and disposable device; designed & developed to measure the urine flow. A prospective comparative study was conducted over 12 months, from July 2023 to July 2024. A total of 372 patients attending the outpatient department were included. Uroflowmetry was performed using both conventional gravimetric uroflowmetry and the P-Flow. Key uroflowmetry variables, including voided volume, peak flow rate, average flow rate, total voiding time, and the shape of the uroflowmetry curve, were measured and compared.

The study found no significant differences between the conventional and portable methods in terms of voided volume (271 mL vs. 270 mL, p = 0.440), voided times (40 sec vs. 38 sec, p = 0.204), Q max (15 mL/s vs. 14.4 mL/s, p = 0.210), and average flow rate (9 mL/s vs. 10 mL/s, p = 0.739). Strong positive correlations between variables across both methods were observed, with a high degree of consistency.

The portable P-Flow uroflowmetry kit provides comparable results to conventional methods in assessing lower urinary tract function. It offers a reliable and convenient alternative for home-based monitoring, without compromising diagnostic accuracy. These findings support the potential utility of portable uroflowmetry device (P-Flow) for routine clinical assessments of urinary function. Further research in larger, multi-center studies is recommended to confirm the broader applicability of the P-Flow system