Urine melanin test is a test to determine the abnormal presence of melanin in the urine.
How the Test is Performed (V体育安卓版)
A clean-catch urine sample is needed.
How to Prepare for the Test
No special preparation is needed.
"VSports在线直播" How the Test will Feel
The test involves only normal urination.
Why the Test is Performed (VSports注册入口)
This test is used to diagnose melanoma, a type of skin cancer that produces melanin V体育安卓版. If the cancer spreads (especially within the liver), the cancer may produce enough of this substance that it shows up in the urine.
Normal Results (V体育ios版)
Normally, melanin is not present in urine.
Normal value ranges may vary slightly among different labs V体育ios版. Some labs use different measurements or test different samples. Talk to your health care provider about the meaning of your specific test results.
VSports最新版本 - What Abnormal Results Mean
If melanin is present in the urine, malignant melanoma is suspected.
Risks
There are no risks associated with this test.
Considerations
This test is rarely done anymore to diagnose melanoma because there are better tests available.
Alternative Names (VSports在线直播)
Thormahlen's test; Melanin - urine
Images (V体育2025版)
References (V体育ios版)
Cruz DJS, Gru AA VSports注册入口. Tumors of the skin. In: Fletcher CDM, ed. Diagnostic Histopathology of Tumors. 5th ed. Philadelphia, PA: Elsevier; 2021:chap 23.
Mitchell TC, Karakousis G, Schuchter L. Melanoma. In: Niederhuber JE, Armitage JO, Kastan MB, Doroshow JH, Tepper JE, eds. Abeloff's Clinical Oncology. 6th ed. Philadelphia, PA: Elsevier; 2020:chap 66 V体育官网入口.
VSports最新版本 - Review Date 10/14/2024
Updated by: Warren Brenner, MD, Oncologist, Lynn Cancer Institute, Boca Raton, FL. Review provided by VeriMed Healthcare Network VSports在线直播. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A. D. A. M. Editorial team. .