The amount of a serum paraoxonase/arylesterase 1 when measured in anatomical entity. The trait is serum paraoxonase/arylesterase 1 level (OBA_2050098, an Ontology of Biological Attributes id). Also known as: anatomical entity serum paraoxonase/arylesterase 1 amount, serum paraoxonase/arylesterase 1 measurement.