title: Have you ever seen a 21-mmol/L serum K+ concentration?
authors.affiliation: Public Health Central Laboratory, Istanbul, Turkey; drfgerin@yahoo.com.
authors.forename: Fethullah
authors.initials: F
authors.lastname: Gerin
authors.affiliation: Department of Biochemistry, School of Medicine, Marmara University, Istanbul, Turkey.
authors.forename: Ali
authors.initials: A
authors.lastname: Yaman
authors.affiliation: Department of Biochemistry, School of Medicine, Marmara University, Istanbul, Turkey.
authors.forename: Ozgur
authors.initials: O
authors.lastname: Baykan
authors.affiliation: Department of Biochemistry, School of Medicine, Marmara University, Istanbul, Turkey.
authors.forename: Onder
authors.initials: O
authors.lastname: Sirikci
authors.affiliation: Department of Biochemistry, School of Medicine, Marmara University, Istanbul, Turkey.
authors.forename: Goncagul
authors.initials: G
authors.lastname: Haklar
mesh_terms: D000369:Aged, 80 and over; D006801:Humans; D008297:Male; D011188:Potassium / Q000097:blood*; D015983:Selection Bias
chemical_list: D011188:Potassium