Abu el Maaty, Mohamed Abdulla Design-of-experiment approach for HPLC analysis of 25-hydroxyvitamin D: a comparative assay with ELISA. [electronic resource] - Journal of chromatographic science Jan 2015 - 66-72 p. digital Publication Type: Comparative Study; Journal Article ISSN: 1945-239X Standard No.: 10.1093/chromsci/bmu017 doi Subjects--Topical Terms: 25-Hydroxyvitamin D 2--bloodChromatography, High Pressure Liquid--methodsEnzyme-Linked Immunosorbent Assay--methodsHumansVitamin D--analogs & derivatives