Glucose Challenge Test (GCT) – 1 Hour Obstetrical Glucose Screening
Understanding the Glucose Challenge Test
The Glucose Challenge Test (GCT), also known as the 1-hour obstetrical glucose screening, is a fundamental diagnostic procedure designed to detect gestational diabetes mellitus (GDM) during pregnancy. This screening test plays a crucial role in maternal-fetal medicine by identifying women who may have developed temporary diabetes during their pregnancy. Gestational diabetes affects approximately 2-10% of pregnancies annually in the United States and requires careful monitoring to ensure optimal health outcomes for both mother and baby.
What Does the Glucose Challenge Test Measure?
The GCT specifically measures your body’s ability to process glucose (sugar) efficiently during pregnancy. The test evaluates:
- Blood glucose levels one hour after consuming a standardized glucose solution
- Your pancreas’s insulin production and response capacity
- Cellular glucose uptake efficiency under pregnancy conditions
- Risk factors for developing gestational diabetes mellitus
Using the advanced Hexokinase method, our laboratory provides highly accurate measurements of plasma glucose concentrations. This enzymatic technique ensures precise results that help healthcare providers make informed decisions about your pregnancy care.
Who Should Consider This Test?
Primary Screening Candidates
The Glucose Challenge Test is recommended for all pregnant women between 24-28 weeks of gestation as part of routine prenatal care. Additional candidates include:
- Women with previous gestational diabetes history
- Patients with family history of type 2 diabetes
- Overweight or obese pregnant individuals (BMI ≥25)
- Women aged 35 years or older
- Those with polycystic ovary syndrome (PCOS)
- Patients from high-risk ethnic backgrounds
Symptoms That May Indicate Need for Testing
- Excessive thirst and frequent urination
- Unusual fatigue beyond normal pregnancy tiredness
- Blurred vision
- Recurrent infections
- Excessive fetal growth detected during ultrasound
Benefits of Glucose Challenge Testing
Early detection through GCT screening offers numerous advantages for maternal and fetal health:
- Prevention of Complications: Identifies gestational diabetes early to prevent birth complications
- Customized Care Planning: Enables healthcare providers to create personalized pregnancy management plans
- Reduced Risk Factors: Helps minimize risks of preeclampsia, cesarean delivery, and neonatal complications
- Long-term Health Monitoring: Provides insights into future type 2 diabetes risk
- Peace of Mind: Offers reassurance about pregnancy health status
Understanding Your Test Results
Normal Results
A blood glucose level below 140 mg/dL (7.8 mmol/L) one hour after glucose consumption typically indicates normal glucose tolerance. This suggests your body is processing sugar effectively during pregnancy.
Abnormal Results
Results of 140 mg/dL or higher may indicate impaired glucose tolerance. In such cases, your healthcare provider will likely recommend a follow-up 3-hour glucose tolerance test (GTT) for definitive diagnosis of gestational diabetes.
Next Steps After Testing
- Normal results: Continue routine prenatal care with standard monitoring
- Borderline results: May require dietary modifications and repeat testing
- Elevated results: Typically leads to comprehensive 3-hour glucose tolerance testing
- Confirmed gestational diabetes: Implementation of specialized care plan including dietary management, exercise recommendations, and possible medication
Test Pricing and Availability
| Test Name | Discount Price | Regular Price |
|---|---|---|
| Glucose Challenge Test (GCT) – 1 Hour Obstetrical | $2 USD | $2 USD |
Nationwide Accessibility
We have diagnostic centers conveniently located across the United States, serving major metropolitan areas including New York City, Los Angeles, Chicago, Houston, Phoenix, Philadelphia, San Antonio, San Diego, Dallas, and San Jose. Our state-of-the-art facilities ensure consistent, high-quality testing standards nationwide.
Take Control of Your Pregnancy Health Today
Don’t leave your pregnancy health to chance. The Glucose Challenge Test provides essential insights that can significantly impact both maternal and fetal wellbeing. Our experienced team of diabetologists and gynecologists are ready to provide comprehensive care and support throughout your pregnancy journey.
Ready to schedule your Glucose Challenge Test? Contact us today to book your appointment and take the first step toward ensuring a healthy pregnancy.
Call or WhatsApp: +1(267) 388-9828
Our dedicated healthcare professionals are available to answer your questions, discuss the testing process, and help you schedule your Glucose Challenge Test at a location convenient for you. Protect your pregnancy health with reliable, accurate screening from General Genetics Corporation.

