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Gestational Glucose Tolerance (4 Specimen) Test

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This test measures glucose levels on four blood specimens.

What is this test?

This test measures glucose levels on four blood specimens collected over the course of 3 hours. Results from this test can aid in diagnosing gestational diabetes. Nearly 10% of pregnancies in the United States are affected by gestational diabetes. Insulin is a hormone that helps the body process glucose (sugar) into energy. Sometimes during pregnancy, hormones that contribute to the baby's development make it difficult for the body to produce enough insulin or properly use insulin. This causes blood sugar to become elevated. Diabetes during pregnancy can lead to complications, including premature birth, infants growing larger than normal which can lead to difficulties in delivery, and babies being born with health issues. If detected and treated early, women with gestational diabetes can still experience a normal healthy pregnancy. While anyone can develop gestational diabetes, there are risk factors that can increase the likelihood. These include obesity, having developed gestation diabetes during an earlier pregnancy, and a family history of diabetes. Glucose tolerance testing measures blood glucose levels over time after ingesting glucose to see if the blood levels rise and fall normally. Testing for gestational diabetes may be ordered during pregnancy. The most common time to take the test is when you are 24-28 weeks pregnant. Earlier testing may be recommended for women with an increased risk. Glucose tolerance testing may be ordered as a follow-up when someone has irregular results from a fasting glucose blood test.

+$15 service fee

Price does not include the Physician Service Fee ($6) and the Lab Collection Fee ($9). These non-refundable fees cover the ordering and oversight of lab tests and follow-up services when appropriate.

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Provided by Quest Diagnostics

Quest test codes:

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How Does it Work?

  • 1. Select a test

    Choose from a wide range of panels and tests
  • 2. Pay online

    Pay online with a credit or debit card — no insurance needed
  • 3. Go to the lab

    Visit the lab of your choice
  • 4. Get fast results online

    We will email you when results are ready, in 1–3 business days

Lab tests FAQs

No. At Tripment Health, we focus on providing transparent healthcare services to uninsured or under-insured individuals. We’ve negotiated prices directly with lab test facilities to make diagnostic lab panels available to individuals who would rather pay directly than go through a private or government-sponsored insurance carrier.

No. By purchasing a blood panel, you will not be able to submit any claim, bill, or other request for reimbursement to any insurer, third-party payer, or Government health program. However, you can use your FSA or HSA card.

You will receive a payment confirmation email, then an additional email confirming your appointment details (type of test, time and location of appointment, and QR code). You will need to present your QR code to the testing facility in order to check in.

Once your test is complete, you will receive your results within 1-3 business days.

With a blood panel, you can establish your body’s baseline values for basic health measurements like cholesterol (total, triglycerides, HDL, LDL and total cholesterol/HDL ratio), glucose and hemoglobin A1c. Additionally, depending on the blood panel you choose, you will receive data on performance measurements such as Vitamin D, Vitamin B12, Magnesium, Thyroid Stimulating Hormone, and/or Testosterone.


Your results are more than just numbers. Your results come with a personalized recommendation from one of our physicians.

No. One of our physicians will order the panels for you.

You must be 18 or over to be able to get tested.

Currently we have local patient service centers available in all states, except in NY, NJ, TX & RI.