4) Pachla LA, Peter T: Measurement of serum uric acid by liquid chromatography, Clin Chem, 25: 1847-1852, 1979.
5) Kock R, Delvoux B, Tillmanns U, Greiling H: A candidate reference method for the determination of uric acid in serum based on high performance liquid chromatography, compared with an isotope dilution-gas chromatographymass spectrometeric method, J Clin Chem Clin Biochem, 27: 157-162, 1989.