Quantification of myeloperoxidase (MPO)-DNA complex levels in a biological specimen. Plasma MPO-DNA complex levels typically measured by immunofluorescence or ELISA are used to detect neutrophil extracellular trap (NETs) formation. The trait is myeloperoxidase (MPO)-DNA complex measurement (EFO_0011039, an Experimental Factor Ontology entry). Also known as: MPO-DNA complex.