Increased urine volume

Increased urine volume, clinically referred to as polyuria or diuresis, is a physiological manifestation or clinical sign rather than a specific molecular target such as a receptor, enzyme, or transporter. It is formally defined as a urine output exceeding 3 liters per day in adults and occurs when the renal tubules fail to reabsorb water effectively or when there is an excess of osmotic particles (StatPearls, 2023; NIH, 2024). This state is often the intended therapeutic outcome of diuretic drugs—such as loop diuretics or SGLT2 inhibitors—which are used to manage fluid overload in cardiovascular and renal diseases (PubMed, 2022). Conversely, it can serve as a diagnostic indicator for metabolic or endocrine disorders, including Diabetes Mellitus (osmotic diuresis due to glucose) and Diabetes Insipidus (impaired vasopressin signaling) (NIH, 2023). Because 'Increased urine volume' describes a phenotypic effect rather than a biological molecule, it is classified as an incorrect entry for a therapeutic target database, although it remains a vital biomarker for assessing drug efficacy and patient safety in clinical practice.

Other names

PolyuriaDiuresisExcessive urinationIncreased urinary output

Not applicable; this is a physiological or clinical outcome (phenotype) resulting from the modulation of molecular targets such as ion transporters (e.g., NKCC2, NCC) or water channels (e.g., Aquaporin-2).