OBA_2045128 (level of Phosphatidylcholine (O-18:1_16:0) in blood serum) is the amount of a phosphatidylcholine O-18:1_16:0 when measured in blood serum. Also known as: blood serum phosphatidylcholine O-18:1_16:0 amount, level of phosphatidylcholine O-18:1_16:0 in blood serum.