This review article underlines the importance of gas chromatography (GC), high-
performance liquid chromatography (HPLC) and their hyphenated techniques using mass …

Introduction 25-hydroxyvitamin D (25OHD) determination is of diagnostic importance for the
investigation of vitamin D deficiency and much more rarely, intoxication. Despite the name …

In this third edition, more than 40 renowned authorities introduce and update chapters on
the theory, fundamentals, techniques, and instrumentation of thin-layer chromatography …

Background: The concentration of 25-hydroxyvitamin D [25 (OH) D] in serum has been
designated the functional indicator of vitamin D (VitD) nutritional status. Unfortunately …

Vitamin D is an important determinant of bone health at all ages. The plasma concentrations
of 25-hydroxy vitamin D (25-OH D) and other metabolites are used as biomarkers for vitamin …

Two physiologically important forms of vitamin D exist: vitamin D2 and vitamin D3, which by
liver based hydroxylase enzymes are converted to 25-hydroxyvitamin D2 and 25 …

An overview of the different extraction procedures of fat-soluble vitamins from human fluids,
foods and pharmaceutical preparations is presented. Methods using organic solvent …

Luque de Castro, MD. etal. Determination of vitamin D3 metablites: state-of-the-art and
trends. J. Pharm. Biomed. Anal. 1999: 20: 1-17. Maggio, ET Enzyme-Immunoassay, Chapter …

Objectives The aim of the present study was to develop a robust and easy to use high
performance liquid chromatography (HPLC) to analyze 25 (OH) D3 in human serum …

A simple, rapid and reliable method for the simultaneous determination of creatinine (Cr)
and uric acid (UA) in plasma and urine has been developed using high performance liquid …