Displaying 2 results of Phytanic Acid Stable Isotopes Phytanic acid is a branched-chain fatty acid found in certain foods such as dairy products and ruminant meats. Stable isotopes of phytanic acid can be used in metabolic studies to investigate its absorption, metabolism, and excretion in humans and animals. These isotopes are chemically identical to natural phytanic acid but have a unique mass, allowing for precise tracking and measurement. This technique can provide valuable insights into the role of phytanic acid in health and disease.