The ideal time to get a diabetes blood test done is in the morning, on an empty stomach. This is also known as a fasting blood sugar test. This test gives a baseline to see any fluctuations in the blood sugar levels in the body. Another preferable time to get blood tests done for diabetes is, 2 hours post-meal, as the food consumed has a larger effect on glucose levels. It also helps in determining the after-meal glucose range. For individuals who take insulin, multiple tests during the day are recommended. However, it would ideal to consult the physician or the lab professional regarding the timings of the recommended tests.