The objective of the Finger prick study falls within the overall objective of the Food Consumption Survey (FCS) 2022-2023, that is to better understand the relationship between nutrition and health, and to monitor the nutritional status of the population. The Finger prick exploratory study aims to test the feasibility of monitoring the nutritional status of the population in Belgium using biomarkers obtained from non-invasive data collection methods (i.e., using microsampling-at-home). Specifically the study aims to use biomarkers in order to:

• estimate the vitamin D status of the population aged three years and older;
• estimate the thiamine (vitamin B1) status of the adult population aged 18 years and older;
• estimate the alcohol consumption of the adult population aged 18 years and older.