NCIt definition : A radioconjugate comprised of the small peptide apcitide labeled with the gamma-emitting
technetium TC99m (metastable Tc-99). Apcitide binds to platelet glycoprotein (GP)
GPIIb/IIIa receptors on the surface of activated platelets. Labeling apcitide with
TC99m allows localization of thrombus formation by gamma-ray imaging equipment and
the ability to distinguish between old, inactive thrombi and new, active thrombi.;