Gallium Citrate Ga-67

**Semantic type:** Pharmacologic Substance

**Definition:** The citrate salt of the radioisotope gallium Ga 67. Although the mechanism is unknown, gallium Ga 67 concentrates in lysosomes and is bound to a soluble intracellular protein in certain viable primary and metastatic tumors and focal sites of inflammation, allowing scintigraphic localization. Ga-67 scintigraphy (GS) cannot differentiate between tumor and acute inflammation.

**Synonyms:** - 1,2,3-Propanetricarboxylic Acid, 2-hydroxy-, Gallium-(sup 67)Ga(1:1) Salt - GALLIUM CITRATE GA-67 - Gallium (67Ga) Citrate - Gallium-67 Citrate - Neoscan