title: Pseudohyperkalaemia from finger flexion during venepuncture masks true hypokalaemia.
authors.forename: Raymond
authors.initials: R
authors.lastname: Gambino
authors.forename: Michael
authors.initials: M
authors.lastname: Sanfilippo
authors.forename: Lydia
authors.initials: L
authors.lastname: Lazcano
mesh_terms: D005385:Fingers / Q000502:physiology; D006801:Humans; D006947:Hyperkalemia / Q000175:diagnosis / Q000209:etiology*; D007008:Hypokalemia / Q000175:diagnosis*; D018962:Phlebotomy / Q000379:methods*; D011188:Potassium / Q000097:blood
chemical_list: D011188:Potassium