ANSWER
Below are studies that support DHA metabolism:
DHA-Metabolism-Targeting-the-Brain-and-Lipoxygenation
Functional-metabolomics-reveals-novel-active-products-in-the-DHA-metabolome
Impact-of-DHA-on-Metabolic-Diseases-from-Womb-to-Tomb
Novel-Metabolism-of-Docosahexaenoic-Acid-in-Neural-Cells