Will a blood test show diabetes?
Asked by: CuriousPatient123
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Community Answer
Answered by Dr. Emily Carter, MD
Yes, a blood test can show diabetes. The most common blood tests used to diagnose diabetes include:
-
A1C Test: Measures your average blood sugar levels over the past 2-3 months. Results are given as a percentage:
- Normal: Below 5.7%
- Prediabetes: 5.7% to 6.4%
- Diabetes: 6.5% or higher
-
Fasting Plasma Glucose (FPG) Test: Measures blood sugar after an overnight fast.
- Normal: Less than 100 mg/dL
- Prediabetes: 100-125 mg/dL
- Diabetes: 126 mg/dL or higher
-
Oral Glucose Tolerance Test (OGTT): Measures blood sugar before and after drinking a glucose-rich drink.
- Normal: Less than 140 mg/dL
- Prediabetes: 140-199 mg/dL
- Diabetes: 200 mg/dL or higher
If you suspect you have diabetes, consult a healthcare professional for proper testing and diagnosis.