Isotope dilution is used to determine the quantity of a chemical substance in a sample. In this method, isotopically enriched material is added to a sample which leads to a "dilution" of the standard.

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

The proposed CRP will contribute to a better understanding of the appropriate use of the stable isotope dilution technique to assess vitamin A status across the continuum from deficiency to toxicity ...

Here you will find the most up to date field and laboratory procedures related to vitamin A status assessment and evaluation of intervention programs using the retinol dilution method. Assessing ...