Hello
I have gone through your question and understood your concern.
Fasting blood sugar (FBS) measures blood
glucose after you have not eaten for at least 8 hours.
It is the first test done to check for prediabetes and diabetes.
If you were not fasting ,than the result can not be taken in consideration for the diagnosis of
pre-diabetes or diabetes.
In my opinion,This result can be considerated like a random blood sugar (RBS) and measures blood glucose regardless of when you last ate.
Random testing is useful because glucose levels in healthy people do not vary widely throughout the day and Blood glucose levels that vary widely may mean a problem. This test is also called a casual blood glucose test.
It is true that your age,positive family history and being African American are risc factors for Diabetes.
But the test result can not be taken in consideration for the diagnosis because it is not fasting.
A fasting blood sugar level from 100 to 125 mg/dL is considered prediabetes.
If it's 126 mg/dL or higher or a a random blood sugar level of 200 mg/dL or higher ; on two separate tests, you have diabetes.
(Actually,if you were fasting, 129 mg/dl can be suggestive of diabetes not prediabetes and the next step will be to repeat the test for the confirmation of the diagnosis)
In my opinion you don't have reason to be concerned because the test result is not a fasting but a random measurement and we can not reach the diagnosis only with this test.
So,be patient because the true fasting test will give the exact information about your situation.
Hope this is helpful.
If you have other dobts,feel free and ask.
Best regards.