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P74 CHEMILUMINESCENT IMMUNOASSAY (CIA) AND LIQUID CHROMATOGRAPHY–TANDEM MASS SPECTOMETRY ASSAY (LC/MS-MS) METHODOLOGY FOR THE DETERMINATION OF VITAMIN D STATUS IN INFANTS AT HIGH RISK FOR DEVELOPING ALLERGIC DISEASES: IS THERE ANY ANALYTICAL BIAS? K Rueter, L Black, M Bulsara, M Clark, C Gamez, EM Lim, A Jones, DJ Palmer, SL Prescott and A Siafarikas School of Paediatrics and Child Health, University of Western Australia, Australia Princess Margaret Hospital for Children, Perth, Australia Telethon Kids Institute, University of Western Australia, Australia Curtin University, Perth, Australia Institute of Health Research, University of Notre Dame, Fremantle, Australia Centre for Metabolomics, University of Western Australia, Australia Endocrinology Department, Sir Charles Gardiner Hospital, Perth, Australia