level of all-cis-octadeca-6,9,12,15-tetraenoic acid in blood (OBA_2055798) is the amount of a all-cis-octadeca-6,9,12,15-tetraenoic acid when measured in blood. Also known as: blood all-cis-octadeca-6,9,12,15-tetraenoic acid amount, level of stearidonic acid in blood.