Urine Tumor Markers

Urine tumor markers and related urine tests can provide valuable information about cancer risk, tumor activity, recurrence, and conditions that may require further investigation. This category explains how different urine-based biomarkers work, what abnormal or positive results may mean, and how these tests fit alongside blood tests, imaging, biopsy, cystoscopy, and other diagnostic procedures. A major focus is **bladder and urinary tract cancer testing**. Detailed guides cover urine cytology as well as specialized tests such as NMP22, bladder tumor antigen (BTA) testing, BTA STAT, BTA TRAK, ImmunoCyt, UroVysion FISH, Cxbladder, and the Xpert Bladder Cancer Monitor. These resources explain what each test detects—from abnormal cells and proteins to chromosome changes and gene-expression patterns—and how results may be used when evaluating possible bladder cancer or monitoring for recurrence. The category also explores **urine biomarkers related to prostate cancer**, including PCA3, SelectMDx, and the ExoDx Prostate test. These tests can add information to PSA results and other clinical findings when doctors are estimating the likelihood of clinically significant prostate cancer or considering whether further testing, including prostate biopsy, may be appropriate. Other guides cover urine testing associated with **neuroendocrine and adrenal tumors**, including 5-HIAA, catecholamines, and metanephrines. Readers can learn why these substances may become elevated in conditions such as carcinoid syndrome, pheochromocytoma, and paraganglioma, as well as how medications, foods, collection methods, and other factors can affect results. Urine testing can also contribute to the evaluation of **multiple myeloma and monoclonal protein disorders**. Topics include Bence Jones proteins, urine free light chains, and urine immunofixation, with explanations of monoclonal light chains, kidney involvement, and how urine findings relate to other laboratory tests. Emerging areas are covered as well, including kidney cancer urine biomarkers such as KIM-1, aquaporin-1, and perilipin-2. Whether you are trying to understand a positive result, prepare for a urine collection, compare different tumor-marker tests, or learn what follow-up testing may involve, these guides provide clear, practical explanations. Urine biomarkers can offer important diagnostic clues, but no single result should be interpreted in isolation. Results are most useful when considered together with symptoms, medical history, examination findings, imaging, and other laboratory or pathology results.