13) Schmidt E, Henkel E, Klauke R, Lorentz K, Sonn–
tag O, SteinW,Weide1mann G, Gerhard!
W.
Proposal
of standard routine methods for the determination of
enzyme cata1ytic activity concentrations in serum and
plasma at 37°C. Fresenius' JAnal Chem 1990; 337: 145-
7.
14) Bowers Jr GN, Bergmeyer HU, Hörder M, Moss
DW. Approved recommendations on IFCCmethods for
the measurements of catalytic concentrations of enzy–
mes. Part
l.
General considerations concarning the de–
termination of the catalytic concentration of an enzyme
in the blood serumofplasma ofman. J Clin ChemClin
Biochem 1980; 18: 89-95.
15) Bais R, Philcox M. Approved recommendation on
IFCC methods for the measurement of catalytic con–
centrations ofenzymes. Part 8. IFCCmethod for lactate
dehydrogenase (L-lactate: NAD-oxidoreductase, EC
1.1.1.27). Eur JClinChemClinBiochem 1994;32: 639-
55.
16) Lorentz
K.
Approved recommendation on IFCC
methods for themeasurement ofcatalytic concentration
Klinisk Kemi
i
Norden 4. 1998
of enzymes. Part 9. IFCC method for a-amylase (1,4-
D-4-glucan4-glucanohydrolase, EC 3.2.1.1). ClinChem
LabMed 1998; 36: 185-203.
17)MossDW. Enzyme referencematerials.Their place
in diagnostic enzymology. JIFCC 1994; 6: 6-9.
18) Miiller MM. Reference materials: General aspects
and IFCC strategy. C1in Biochem 1998; 31: 433-36.
19) FerardG, Edwards J, KannoT,Lessinger JM,Moss
DW, Schiele F, Tietz NW, Vassault
A.
Interassay cali–
bration as a major contribution to the comparability of
results in clinical enzymology. ClinBiochem 1998; 31:
489-94.
20) FerardG, Edwards J,KannoT,Lessinger JM,Moss
DW, Schiele F, Tietz NW, Vassaull A. Validatian of an
enzyme calibrator - An IFCC guideline. Clin Biochem
1998; 31: 495-500.
21)Bretaudiere JP,VassaultA,AmsellemL, PourciML,
Thieu-Phung H, Bailly M. Criteria for Estab1ishing a
Standardized Method for Determining Alkaline Phos–
phataseActivity inHumanSerum. ClinChem 1977; 23:
2263-74.
123
