Had this with my daughter over several tests but much higher readings. She went to the doctors had tests done was told some time later by the doctors receptionist on the phone that her tests were normal and so has not followed it up.
Though that number was a bit on the high side you need to follow it up with a few more tests, before eating half an hour after then an hour and at two hours people who are non diabetics can have high readings occasionally so its best to look at it over time rather than getting overly concerned after one or even two tests.