A system and method for measuring a radioactive concentration of a radiopharmaceutical is disclosed. The system includes a container, an interrogation region associated with the container, a radiation detector, a signal capture device, and a microprocessor system. The radiation detector focuses radiation emitted from the interrogation region, a measurement of which is then obtained by the signal capture device. The microprocessor system is in data communication with the signal capture device, and is capable of calculating the radioactive concentration of the radiopharmaceutical contained in the interrogation region from the radiation measurement obtained by the signal capture device.