Richard Mellanby was presenting data from the VitDAL at the Scottish BSAVA Conference this week. He gave an overview of recent VitDAL studies on vitamin D homeostasis disorders in companion animals before talking about the lab’s ongoing research exploring the immune-modulatory properties of vitamin D. Richard was also able to highlight the progress made in developing vitamin D metabolite assays, including 25 hydroxyvitamin D, which the lab is now routinely measuring in sheep and dog samples using state-of-the-art ultra-high performance liquid chromatography–mass spectrometry technologies.