title: Variation in plasma potassium when using collection tubes containing gel separators.
authors.forename: S
authors.initials: S
authors.lastname: Jowitt
authors.forename: M G
authors.initials: MG
authors.lastname: Longlands
authors.forename: D E
authors.initials: DE
authors.lastname: Probert
mesh_terms: D000368:Aged; D001800:Blood Specimen Collection / Q000295:instrumentation*; D002498:Centrifugation; D005189:False Positive Reactions; D005782:Gels; D006801:Humans; D008297:Male; D011188:Potassium / Q000097:blood*
chemical_list: D005782:Gels; D011188:Potassium