Glucose Tolerance Test, Postprandial, 1-Hour
Quest Diagnostics
Sample type: Plasma
Requires fasting: No
Phlebotomy required
Details
This test checks for high sugar levels after eating, which can indicate gestational diabetes in pregnant patients. If the initial results suggest gestational diabetes, a longer, 3-hour glucose test is recommended for confirmation.
- Glucose, Postprandial (1 Hour)
Estimated days for results: Results should be available in 2 - 5 business days after the sample is collected
Details
Glucose Tolerance Test, Postprandial/1-Hour - This test checks for high sugar levels after eating, which can indicate gestational diabetes in pregnant patients. If the initial results suggest gestational diabetes, a longer, 3-hour glucose test is recommended for confirmation.
What patients is this test right for?
This test is particularly important for pregnant individuals who may show signs of high blood sugar levels after meals, a key indicator of gestational diabetes.
What type of sample is required for this test?
1 mL plasma, which must be collected in a special gray-top tube that contains fluoride/oxalate.
Test Resources
For more information, please consult your healthcare provider or visit relevant medical websites.
2–5 business days
Not established
Note: Any glucose value ≥200 mg/dL will be flagged as high unless a reference range has been established.
Note: Any glucose value ≥200 mg/dL will be flagged as high unless a reference range has been established.
Your specimen will be collected 1 hour following a meal. Your doctor should provide any special instructions related to fasting for your test. Always follow your doctor's instructions.
Blood Draw Options with Fullscript
Fullscript offers several convenient phlebotomy options to complete your lab testing:
Quest Diagnostics Patient Service Centers (PSC)
- Location: Visit a nearby Quest Diagnostics Patient Service Center.
- Cost: $10 sample collection fee (paid during lab order checkout).
- Scheduling: Schedule your appointment here. Appointments are recommended to reduce wait times. Walk-ins are accepted, but may experience delays. Aim to arrive 10 minutes before your appointment.
- Collection Instructions:
- Bring a valid ID.
- Bring your digital or printed requisition form, available in the Labs tab of your Fullscript account.
- Check-in: Scan the QR code from your confirmation email or follow kiosk instructions.
- More Info: Quest Diagnostics blood draw guide
Getlabs Mobile Phlebotomy
- Location: Sample collection at your home or office.
- Cost: $85 sample collection fee (paid during lab order checkout).
- Availability: Available in most locations – enter your ZIP code during checkout to confirm.
- Scheduling: Schedule your appointment here through your Fullscript account.
- Collection Instructions:
- Have your digital or printed requisition form and valid ID ready.
- Your phlebotomist will contact you by phone to coordinate arrival.
- More Info: Getlabs blood draw guide
Specimen
- Preferred Specimen(s): 1 mL plasma collected in a fluoride/oxalate (gray-top) tube
- Alternative: NA
- Minimum Volume: 0.5 mL
- Collection Instructions: NA
Storage and shipping instructions
- Transport Container: Fluoride/oxalate (gray-top) tube
- Transport Temperature: Room Temperature
- Specimen Stability:
- Room temperature: 7 days
- Refrigerated: 7 days
- Frozen: 28 days
- Reject Criteria: NA
State restrictions:
Patient can't order this test if they are located in Hawaii, Puerto Rico, New Jersey, New York, or Rhode Island
