The present invention relates to antibodies against Oncofetal Antigen/immature Laminin receptor protein (OFA/iLRP) that can be used singly or in conjunction to detect or treat OFA/iLRP-related diseases. More specifically, the antibodies can be used for several purposes including: (i) detecting and measuring OFA/iLRP in different biofluids and (ii) using OFA/iLRP with an antibody directed against the monomeric form and its associated diseases.