title: Results of a pilot external quality assessment study on free protoporphyrin in erythrocytes.
authors.forename: Michael
authors.initials: M
authors.lastname: Vogeser
authors.forename: Thomas
authors.initials: T
authors.lastname: Stauch
authors.forename: Elisabeth
authors.initials: E
authors.lastname: Minder
mesh_terms: D000328:Adult; D001774:Blood Chemical Analysis / Q000592:standards*; D004912:Erythrocytes / Q000737:chemistry*; D006801:Humans; D008297:Male; D010865:Pilot Projects; D011524:Protoporphyrins / Q000097:blood*; D011786:Quality Control
chemical_list: D011524:Protoporphyrins