Skip to main content
An official website of the United States government
Government Funding Lapse
Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted.

The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.

Updates regarding government operating status and resumption of normal operations can be found at opm.gov.

perflutren

A fluorinated hydrocarbon and gaseous substance used as an imaging contrast agent. After administration in microsphere form, perflutren exhibits lower acoustic impedance than blood and improves ultrasound signaling.
Check for active clinical trials using this agentView this agent in the NCI Thesaurus
Synonym:freon 218
octafluoropropane
perfluoropropane
US brand name:Definity
Abbreviation:PFP
Search NCI's Drug Dictionary
Please enter up to 30 characters for your search