IFCC primary reference procedures for the measurement of catalytic activity concentrations of enzymes at 37 °C. Part 9: reference procedure for the measurement of catalytic concentration of alkaline phosphatase International Federation of Clinical Chemistry and Laboratory Medicine (IFCC) Scientific Division, Committee on Reference Systems of Enzymes (C-RSE) (1)). - Schumann G; Klauke R; Canalias F; Bossert-Reuther S; Franck PF; Gella FJ; Jørgensen PJ; Kang D; Lessinger JM; Panteghini M; Ceriotti F (Clinical chemistry and laboratory medicine, 2011)