port-wine urine

port-wine urine

 A descriptor for the transparent, red urine seen in myoglobinuria due to muscle trauma or intense, prolonged, and/or violent exercise–eg, marathon-running and karate; in contrast, hemoglobinuria with RBC casts is turbid red.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.