Glucose, Fasting and Postprandial, 2-Hour

Catalog information reviewed: August 24, 2026 by the Sunridge Medical clinical team.

What this laboratory test evaluates

DetailsGlucose, Fasting and Postprandial/2-Hour – This test measures blood sugar levels after fasting and again 2 hours after eating. It's particularly important for diagnosing conditions like gestational diabetes in pregnant individuals. If initial results indicate high sugar levels, a more detailed 3-hour oral glucose tolerance test may be recommended to confirm gestational diabetes.

What patients is this test right for?This test is crucial for individuals who are pregnant and showing signs of high blood sugar, which could indicate gestational diabetes.

What type of sample is required for this test?Two 1 mL plasma specimens are needed.

Additional test information

This test measures blood sugar levels after fasting and again 2 hours after eating. It's particularly important for diagnosing conditions like gestational diabetes in pregnant individuals. If initial results indicate high sugar levels, a more detailed 3-hour oral glucose tolerance test may be recommended to confirm gestational diabetes.

Collection and processing

• Sample type: Plasma
• Fasting: Yes
• Estimated laboratory processing: Results should be available in 2 – 5 business days after the sample is collected

How Sunridge uses laboratory information

Sunridge considers the medical question, symptoms, history, medications, prior results, and whether the finding could change care before recommending testing. A laboratory result is not interpreted in isolation and does not establish a diagnosis by itself.

Before requesting this test

Availability, collection requirements, eligibility, and processing estimates can change. Sunridge reviews each request and, when appropriate, creates the order through Fullscript. Follow the current instructions supplied with the approved order.