title: [The red ring test. A spot test for porphyrins on filter paper (author's transl)].
mesh_terms: D000818:Animals; D007202:Indicators and Reagents; D008722:Methods; D010209:Paper; D011164:Porphyrias / Q000175:diagnosis; D011166:Porphyrins / Q000032:analysis*
chemical_list: D007202:Indicators and Reagents; D011166:Porphyrins
vernacular_title: Der Rote Ring-Test--ein Suchtest für Porphyrine auf Filterpapier.