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
2–5 business days
Note: Any glucose value ≥200 mg/dL will be flagged as high unless a reference range has been established.
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
- Preferred Specimen(s): 1 mL plasma collected in a fluoride/oxalate (gray-top) tube
- Alternative: NA
- Minimum Volume: 0.5 mL
- Collection Instructions: NA
- 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 Puerto Rico, Hawaii, Rhode Island, New Jersey, or New York
