level of sarcoplasmic/endoplasmic reticulum calcium ATPase 3 in blood serum (Ontology of Biological Attributes term OBA_2040728) is the amount of a sarcoplasmic/endoplasmic reticulum calcium ATPase 3 when measured in blood serum. Also known as: blood serum sarcoplasmic/endoplasmic reticulum calcium ATPase 3 amount.