Fasting blood glucose measurement with glucose monitoring trend analysis (serum/plasma concentration)

Why This Test Is Done

Your doctor may order this test if you have symptoms of high or low blood sugar, such as excessive thirst, fatigue, or unexplained weight changes. It’s also used to screen for diabetes or to check how well diabetes treatments are working. If you’ve been using glucose monitors at home, this test may include recent readings to assess patterns in your blood sugar levels.

What to Expect Before the Test

For the fasting blood glucose part, you’ll need to avoid eating or drinking (except water) for 8–12 hours before the test. If glucose monitoring data is included, you may need to bring recent readings from your home monitor. Always follow your healthcare provider’s specific instructions.

How the Test Works

A healthcare professional will draw blood from a vein in your arm. The blood sample is tested for glucose concentration in serum or plasma. If glucose monitoring data is included, your recent home readings may be analyzed alongside this result to identify trends, such as spikes or drops over time.

What the Results Mean

The test result shows your blood sugar level at the time of testing. If glucose monitoring data is included, it may highlight patterns (e.g., highs or lows) that could indicate how your body manages blood sugar. Your doctor will interpret these results in the context of your overall health and symptoms.