Copper Cu 64 Trastuzumab

**Semantic type:** Amino Acid, Peptide, or Protein|Indicator, Reagent, or Diagnostic Aid|Pharmacologic Substance

**Definition:** A diagnostic radioimmunoconjugate comprised of the recombinant humanized monoclonal antibody trastuzumab conjugated with the positron-emitting radioisotope copper Cu 64. Copper Cu 64 trastuzumab binds to the extracellular domain of human epidermal growth factor receptor 2 (HER2), allowing the detection of HER2 distribution using positron emission tomography (PET).

**Synonyms:** - Cu-64-trastuzumab