Antibody is a 2002 science fiction thriller film directed and edited by Christian McIntire that debuted as a Sci Fi Pictures TV-movie on the Sci Fi Channel on February 8, 2003.

A scientist (Lance Henriksen) leads a team in an experimental miniaturized craft injected into the bloodstream of a dying terrorist (Yulian Vergov) whose body conceals a computer chip that will trigger a nuclear explosion in the U.S. Capitol Building in less than 24 hours.