18F-EF5
A radioactive substance being studied in positron emission tomography (PET) imaging to find cancer cells that have a low level of oxygen. This may help predict how well the cancer will respond to treatment. Also called fluorine F 18-EF5.
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.