Capillary Zone Electrophoresis (CZE) with laser-excited fluorescence detection has been found to be a fast, easy, and accurate method for directly measuring serum retinol. Due to its small sample requirements, the method may be used for finger-prick analysis.
The present invention relates to screening or testing for insulin like growth factors, insulin like growth factor binding proteins and/or acid labile subunit by the use of a solid support. Blood is collected onto a solid support, such as paper, and subsequently the analytes of interest are extracted for testing.
