Determination of retinol, antioxidant vitamins and homocysteine in skin puncture blood.

@article{Erhardt1999DeterminationOR,
  title={Determination of retinol, antioxidant vitamins and homocysteine in skin puncture blood.},
  author={Juergen Georg Erhardt and Felix Heinrich and Hans Konrad Biesalski},
  journal={International journal for vitamin and nutrition research. Internationale Zeitschrift fur Vitamin- und Ernahrungsforschung. Journal international de vitaminologie et de nutrition},
  year={1999},
  volume={69 5},
  pages={309-14}
}
For determination of the vitamin status via mass screening, simple and rapid methods are required. Additionally, blood samples should be obtained using simple and low invasive sampling techniques. To fulfill this existing methods have been modified to analyze retinol, tocopherols, beta-carotene, vitamin C and homocysteine in 20 microliters plasma. Blood samples were obtained via skin punctures. HPLC measurements were carried out with isocratic separation and precolumn derivatization. Intra and… CONTINUE READING