Definition: 'Watson-Schwartz Test'
Watson-Schwartz testType: Term
Pronunciation: wot′sŏn schwōrts
1. A qualitative screening test for diagnosis of acute intermittent porphyria, in which Ehrlich diazo agent and saturated sodium acetate are added to the urine. A pink or red color indicates the presence of porphobilinogen or urobilinogen. Because the former indicates porphyria and the latter does not, positive results require further differential extraction with butanol and chloroform to eliminate false-positive results.
The definition information for Watson-Schwartz test is provided by Stedman's. You can search our medical dictionary here.
Stedman's, part of Lippincott Williams & Wilkins, provides a comprehensive line of health-science publications for healthcare professionals and medical students.