IDS 25-Hydroxy Vitamin D EIA Enzymeimmunoassay for the quantitative determination of 25-hydroxyvitamin D and other hydroxylated metabolites in serum or plasma. Ref: AC-57F1 Lot 60897 Exp 2009-08; Immunodiagnostic Systems Ltd, Unit 10, Boldon Business Park, Boldon, Tyne & Wear, NE35. 9PD, UK. Enzymeimmunoassay for the quantitative determination of 25-hydroxyvitamin D and other hydroxylated metabolites in serum or plasma