The amount of a 1-arachidonoyl-sn-glycerol 3-phosphate(2-) when measured in blood. The trait is OBA_2050358 (level of 1-arachidonoyl-sn-glycerol 3-phosphate(2-) in blood). Also known as: blood 1-arachidonoyl-sn-glycerol 3-phosphate(2-) amount.