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Medical Definition of Thormahlen's test
1. A test for melanin; the suspected liquid is treated with sodium nitroprusside, caustic potash, and acetic acid; if melanin is present, the solution takes on a deep blue colour. (05 Mar 2000)
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1. A test for melanin; the suspected liquid is treated with sodium nitroprusside, caustic potash, and acetic acid; if melanin is present, the solution takes on a deep blue colour. (05 Mar 2000)