One Blood Sugar Test Isn’t the Whole Story — Here’s Why We Still Recommend It
A fasting glucose test is one of the simplest ways to get a first look at how your body is handling blood sugar — and it’s often the test people start with before deciding whether something more detailed, like an A1c, makes sense.
The test measures the amount of sugar in your blood at the moment of the draw. Done after fasting, it’s a widely used way to screen for prediabetes and diabetes.
Worth knowing before you order
A single glucose reading is a snapshot, not a trend — a doctor may want to confirm any unusual result with additional testing rather than relying on one number alone. That’s not a flaw in the test; it’s just what a single blood draw can and can’t tell you.
Why people still order it
- A family history of diabetes
- A quick, low-cost way to check in before deciding on more testing
- Tracking progress after a change in diet or weight
What to expect
Fast for at least 8 hours beforehand — water is fine.
Ready to order? The Glucose (Blood Sugar) is $19 at SelectATest, with results in your own secure online portal.
This post is for general information and does not replace advice from your own doctor. Tests are ordered by an independent licensed physician, and results are not a diagnosis. If you are having a medical emergency, call 911.