OneDayTests Fasting Glucose Blood Test
Type
Blood Testing
Biomarkers
4
Duration
30 min
Results
24 hours
A test to help diagnose diabetes or prediabetes by monitoring glucose concentration levels. This is a fasting test.
Fasting Blood Glucose is a straightforward and widely used blood test to screen for diabetes, prediabetes, or gestational diabetes during pregnancy. A fasting blood glucose test measures the level of glucose in your blood at its lowest point, after you haven't eaten or drunk anything for 12 hours. Glucose is a form of sugar and serves as the primary energy source for your body. Insulin assists in transporting glucose from your bloodstream into your cells. An imbalance in blood glucose levels, whether too high or too low, can indicate a medical issue. Elevated blood glucose levels (hyperglycemia) may signal diabetes, a condition that can lead to long-term health problems if not treated.
Key Details
Who Is This For?
Adults over 35 as part of routine screening (diabetes affects 1 in 10 adults globally). Anyone with a family history of type 2 diabetes. People who are overweight or physically inactive. Those experiencing increased thirst, frequent urination, unexplained weight loss, or fatigue. Women with a history of gestational diabetes or polycystic ovary syndrome (PCOS).
What's Included
Preparation Required
Fasting for 10–12 hours before your appointment is recommended for accurate results (water is fine). Avoid alcohol for 24 hours and intense exercise for 12 hours before the blood draw. Morning appointments are ideal for consistent hormone and glucose readings. The blood draw typically takes 5–10 minutes.
Biomarkers Tested
4Blood sugar — the body's primary energy source. Fasting glucose screens for diabetes and prediabetes. Chronically elevated glucose damages blood vessels and organs. Levels fluctuate with meals, stress, and physical activity.
If you have diabetes your body doesn't process glucose effectively.
Reflects your average blood sugar over the past 2–3 months by measuring the percentage of hemoglobin with attached glucose. HbA1c is the gold standard for diagnosing and monitoring diabetes, unaffected by daily fluctuations.
The hormone produced by the pancreas to regulate blood sugar. Elevated fasting insulin — even with normal glucose — is an early marker of insulin resistance, which precedes type 2 diabetes by years. Key biomarker in longevity medicine.
Nearest locations
View all 29 locationsMore from OneDayTests
Ultimate Longevity Blood Test
$290Comprehensive blood test analyzing 66 biomarkers for a detailed health assessment.
Cholesterol Blood Test
$37Comprehensive blood test to analyze cholesterol levels and assess cardiovascular risks.
Liver Function Blood Test
$35Comprehensive liver function blood test measuring liver enzymes, proteins, and bilirubin to assess liver health.
Ultimate Performance Blood Test
$190Comprehensive blood test analyzing 57 biomarkers for detailed health insights and performance optimization.
- Category
- Diagnostic
- Sample Type
- Blood draw
- Duration
- 30 min
- Results
- 24 hours
OneDayTests
Quick access to same-day medical testing with fast results for better health decisions.
