Glucose in maternal serum/plasma during pregnancy (24-hour profile)
This test measures blood glucose levels over a 24-hour period in your blood taken from your maternal serum or plasma during pregnancy. It helps track how your body manages glucose, especially important for managing gestational diabetes.
["A 24-hour glucose profile helps assess how your body responds to glucose during pregnancy."]
Key facts at a glance
- LOINC
- 47776-0
- Short code
- GH Pre Glc PO SerPl-aCnc
- Synonyms
- GH Pre Glc PO SerPl-aCnc
- Category
- glucose
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- true
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why Is This Test Done?
Your healthcare provider may order this test if you have symptoms of gestational diabetes, such as increased thirst, frequent urination, or unexplained fatigue. It may also be recommended during routine prenatal care for high-risk pregnancies or if you have risk factors like obesity, family history of diabetes, or previous gestational diabetes.
How Is the Test Performed?
Blood samples are collected from your arm over a 24-hour period, typically at set intervals (e.g., every 2–4 hours). The samples are tested for glucose concentration using a method like enzymatic analysis. You may be asked to follow a specific diet or activity plan before or during testing to ensure accurate results.
What Do the Results Mean?
Results are interpreted by your healthcare provider based on your individual needs and pregnancy status. Abnormal results may indicate how your body handles glucose, which can inform treatment decisions, such as diet changes, exercise, or medication.
What Are Common Risks or Side Effects?
The most common side effect is mild discomfort or bruising at the needle insertion site. There are no significant risks associated with this test, but ensure you follow your provider’s instructions for proper sample collection to avoid contamination or errors.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Pregnancy glucose monitoring (serum/plasma)
Frequently asked questions
What does a 24-hour glucose profile test for?
How often is this test done during pregnancy?
Can I eat or drink before this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy