The amount of a BTB/POZ domain-containing adapter for CUL3-mediated RhoA degradation protein 2 when measured in blood serum. The trait is Ontology of Biological Attributes id OBA_2043887 (level of BTB/POZ domain-containing adapter for CUL3-mediated RhoA degradation protein 2 in blood serum). Also known as: blood serum BTB/POZ domain-containing adapter for CUL3-mediated RhoA degradation protein 2 amount.