Consumers' perception of nutritional facts table and nutritional traffic light in food products' labelling: A qualitative study.

Background And Objective: Traffic light labelling (TLL) policy has been adopted to improve consumers' food choices. This qualitative study examined the consumers' perception of TLL and nutritional facts table (NFT) in Iran.

Design: We applied a qualitative method to explore public views and perceptions of NFT and TLL in Iran.

Competitive Protein-binding assay-based Enzyme-immunoassay Method, Compared to High-pressure Liquid Chromatography, Has a Very Lower Diagnostic Value to Detect Vitamin D Deficiency in 9-12 Years Children.

Background: The most reliable indicator of Vitamin D status is circulating concentration of 25-hydroxycalciferol (25(OH) D) routinely determined by enzyme-immunoassays (EIA) methods. This study was performed to compare commonly used competitive protein-binding assays (CPBA)-based EIA with the gold standard, high-pressure liquid chromatography (HPLC).

Methods: Concentrations of 25(OH) D in sera from 257 randomly selected school children aged 9-11 years were determined by two methods of CPBA and HPLC.