The International Continence Society established a committee in 1973 to standardize terminology for lower urinary tract function. This monograph, revised and extended from five reports by the committee, aims to facilitate the comparison of urodynamic study results. The standards are applicable to both human and animal studies, with specific guidelines for anesthesia use in animal studies. The monograph covers clinical assessment, including a detailed history, frequency/volume chart, and physical examination. It also details procedures for evaluating urine storage, such as cystometry and urethral pressure measurement, providing specific definitions and techniques for each. Key aspects include the measurement of bladder pressure, sensation, capacity, and compliance, as well as the assessment of urethral pressure and closure.The International Continence Society established a committee in 1973 to standardize terminology for lower urinary tract function. This monograph, revised and extended from five reports by the committee, aims to facilitate the comparison of urodynamic study results. The standards are applicable to both human and animal studies, with specific guidelines for anesthesia use in animal studies. The monograph covers clinical assessment, including a detailed history, frequency/volume chart, and physical examination. It also details procedures for evaluating urine storage, such as cystometry and urethral pressure measurement, providing specific definitions and techniques for each. Key aspects include the measurement of bladder pressure, sensation, capacity, and compliance, as well as the assessment of urethral pressure and closure.