Porcine circovirus (PCV) is a small non-enveloped virus with a single stranded, circular DNA genome in the genus Circovirus, family Circoviridae. It utilizes an ambisense transcription strategy and contains four open reading frames (ORFs). Originally discovered in 1974 as a cell culture contaminant, porcine circovirus type 1 (PCV1) is generally considered to be nonpathogenic. The identification of porcine circovirus type 2 (PCV2) followed in 1997. The systemic, respiratory, enteric, and reproductive manifestations of PCV infection are known collectively as porcine circovirus-associated disease (PCVAD)/porcine circovirus disease (PCVD). In North America, the term PCVAD is generally preferred, while PCVD is used primarily in Europe. Kansas State University researchers have recently discovered a third species, porcine circovirus type 3 (PCV3).

Kernel PCV3 Ab ELISA kit is for detection of antibodies to the PCV3 in porcine serum and plasma samples.