Provided is reagents and methods for non-invasive in vivo imaging wherein the reagents comprise targeted carrier molecules conjugated to a NIB reporter molecule. In one aspect the targeted carrier molecule is an antibody, or fragment thereof that has specificity for an antigen in a living body, animal or human. In one embodiment the antibodes are anti-cancer/tumor marker antibodies, organ specific antibodies, tissue specific antibodies, cell type specific antibodies, cell surface specific antibodies, anti-viral antibodies, anti-bacterial antibodies and anti-pathogenic antibodies. The NIP reporter molecules are any fluorescent reporter molecule compatible with in vivo imaging and generally having an excitation wavelength of at least 580 nm.
