Urine melanin
Definition
Urine melanin is a test to determine the abnormal presence of melanin in the urine.
Alternative Names
Thormahlen's test; Melanin - urineWhy the Test is Performed
This test is used to diagnose melanoma, a type of skin cancer that produces melanin. If the cancer spreads (especially within the liver), the cancer may produce enough of this substance that it shows up in the urine.
How the Test is Performed
A clean-catch urine sample is needed.
How to Prepare for the Test
No special preparation is needed.
How the Test Will Feel
The test involves only normal urination.
Risks
There are no risks associated with this test.
Considerations
This test is rarely performed as there are better diagnostic tests available.
Normal Results
Normally, melanin is not present in urine.
What Abnormal Results Mean
If melanin is present in the urine, malignant melanoma is suspected.
A.D.A.M., Inc. is accredited by
URAC, also known as the American
Accreditation HealthCare Commission. URAC's accreditation program is
the first of its kind, requiring compliance with 53 standards of quality and
accountability, verified by independent audit.
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2005 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.