Pres. Obama stops in a Pentagon clinic for a checkup

(CNN) -- President Barack Obama stopped in a Pentagon clinic for a checkup on Saturday, but it wasn't for a case of the flu.

The White House said the president underwent a "routine fitness evaluation" which was conducted at the Fit to Win Clinic at the Pentagon.

"The fitness evaluation is part of the periodic medical exam that is coordinated by the physician to the president," a White House official said. "The results of the president's periodic medical exam will be released before the end of the month."

Obama's visit comes amidst a flu epidemic in the United States.

The president has received a flu shot, a White House official said, but the shot was not administered on Saturday.

His prior physical exam in October 2011 found the longtime smoker to be tobacco free and consuming a healthy diet.

"The president is in excellent health and 'fit for duty,'" Dr. Jeffrey C. Kulhman wrote at the time. "All clinical data indicate he will remain so for the duration of his presidency."

The clinic, part of the DiLorenzo TRICARE Health clinic, provides screenings, classes and exercise programs. It does not list weekend hours as part of its regular schedule.