
What causes high blood sugar levels during pregnancy?
- You were overweight before you got pregnant,
- Are Hispanic, African-American, Native American or Asian.
- Have a blood sugar level that is higher than it should be but not high enough to be diabetes,
- If you have a family member with diabetes,
- Have had gestational diabetes before,
- Have high blood pressure or other medical complications,
What do you need to know about glucose testing during pregnancy?
A glucose screening test is a routine test during pregnancy that checks a pregnant woman's blood glucose (sugar) level. Gestational diabetes is high blood sugar (diabetes) that starts or is found during pregnancy.
What causes elevated glucose in pregnancy?
High blood sugar in pregnancy is caused by hormonal changes that a woman's body undergoes while she is pregnant. The placenta, which helps nourish the baby in the mother's uterus, produces hormones that cause the mother's body cells to reject insulin.
What to eat before your pregnancy glucose test?
The first step is commonly referred to as a Glucose Challenge Test (GCT):
- You do not need to prepare or change your diet (unless your doctor advises otherwise).
- Some clinics advise women to eat a low carbohydrate meal before the test. Avoid bread, juices, and cereals. ...
- You are asked to drink a liquid that contains glucose
- Your blood will be drawn 1 hour after you drink the glucose solution to check your glucose levels

How can I lower my blood sugar during pregnancy?
Sweets and desserts should be avoided as they may lead to high blood sugar levels.Eat 3 meals and 2–3 snacks per day. ... Measure your servings of starchy foods. ... One 8-ounce cup of milk at a time. ... One small portion of fruit at a time. ... Eat more fiber. ... Breakfast Matters. ... Avoid fruit juice and sugary drinks.More items...
What happens if glucose test is too high?
If your results show higher than normal glucose levels, it may mean you have or are at risk for getting diabetes. High glucose levels may also be a sign of: Hyperthyroidism. Pancreas disorders.
Will one high blood sugar hurt my baby?
If your blood sugar level is higher than the standard range, it can cause your baby to grow too large. Very large babies — those who weigh 9 pounds or more — are more likely to become wedged in the birth canal, have birth injuries or need a C-section birth. Early (preterm) birth.
What is considered high glucose levels during pregnancy?
Most doctors and nurses consider your blood sugar level in the screening test to be high if it is above 130 to 140 mg/dL (7.2 to 7.7 mmol/L). If your blood sugar level is very high (≥200 mg/dL [11.1 mmol/L]), there is a very strong chance that you have gestational diabetes.
What are the warning signs of gestational diabetes?
Warning Signs of Gestational DiabetesSugar in the urine.Unusual thirst.Frequent urination.Fatigue.Nausea.Blurred vision.Vaginal, bladder and skin infections.
Is it common to fail 1 hour glucose test?
The truth about this test is that the one-hour test is pretty easy to “fail,” and many people do! They make the threshold low enough so that they catch anyone who could be having an issue, just in case.
What happens if I ignore my gestational diabetes?
If untreated, gestational diabetes can cause problems for your baby, such as premature birth and stillbirth. Gestational diabetes usually goes away after the baby's born; but if you have it, you're more likely to develop diabetes later in life.
What foods should I avoid if I have gestational diabetes?
Try to avoid eating simple carbohydrates, such as potatoes, french-fries, white rice, candy, soda, and other sweets. This is because they cause your blood sugar to rise quickly after you eat such foods....Sweets are high in fat and sugar, so limit how often you eat them. ... Even sugar-free sweets may not be the best choice.More items...•
What happens if gestational diabetes is not controlled?
Diabetes that is not well controlled causes the baby's blood sugar to be high. The baby is “overfed” and grows extra-large. Besides causing discomfort to the woman during the last few months of pregnancy, an extra-large baby can lead to problems during delivery for both the mother and the baby.
What triggers gestational diabetes?
What Causes Gestational Diabetes? Gestational diabetes occurs when your body can't make enough insulin during your pregnancy. Insulin is a hormone made by your pancreas that acts like a key to let blood sugar into the cells in your body for use as energy.
What happens if I fail my 3 hour glucose test?
If a patient has two or more abnormal values during the three-hour test, then the test overall is considered abnormal. Your doctor will likely diagnose you with gestational diabetes if you fail the three-hour test.
Do you gain a lot of weight with gestational diabetes?
Conclusion: Women who develop GDM have higher gestational weight gain through 24 weeks. Gestational weight gain is a significant risk factor for GDM in the overweight or obese patient but not in patients who were underweight or had a normal BMI before pregnancy.
Why is my 2 hour glucose higher than 1 hour?
A: The highest peak blood sugar levels generally occur 1 hour after a meal if carbohydrates were eaten. At 2 hours after a meal, protein begins to break down into blood sugar which could again increase blood sugar.
What is considered failing 2 hour glucose test?
If you're being tested for type 2 diabetes, two hours after drinking the glucose solution: A normal blood glucose level is lower than 140 mg/dL (7.8 mmol/L). A blood glucose level between 140 and 199 mg/dL (7.8 and 11 mmol/L) is considered impaired glucose tolerance, or prediabetes.
What can cause a false high glucose reading?
However, various factors such as application errors, extreme environmental conditions, extreme hematocrit values, or medication interferences may potentially falsify blood glucose readings. Incorrect blood glucose readings may lead to treatment errors, for example, incorrect insulin dosing.
What is the normal range for 1 hour glucose test during pregnancy?
Normal Results Most of the time, a normal result for the glucose screening test is a blood sugar that is equal to or less than 140 mg/dL (7.8 mmol/L) 1 hour after drinking the glucose solution. A normal result means you do not have gestational diabetes.
High glucose during pregnancy and diet
During pregnancy, a women should pay special attention to her diet. Craving sweets and other high glucose foods is common, so much more difficult it appears to maintain the right diet. But unfortunately, mainating normal sugar during pregnancy is even more difficult because the sugar is faster absorbed into the blood and requires more insulin.
Identifying sugars in foods
Study the packaging carefully. The ingredients ending with "ose" are sugars (glucose, fructose, lactose, dextrose).
Restrict fats
A diet high in fats makes insulin less efficient, which increases the risk of gestational diabetes, even if you don't eat so much high glucose foods. Pease note that the baby needs fats for normal development and some vitamins also need fats for normal absorption, but it's unsaturated fats that your should use, for example, fish or vegetable oil.
Don't starve!
Babies whose mothers were starving during pregnancy are by other 60% more inclined to obesity later in life!
What Is a Glucose Test in Pregnancy?
There are two glucose tests that are typically offered during pregnancy as part of your prenatal care. Both the glucose challenge test (the most common glucose screening test) and the glucose tolerance test measure how your body responds to glucose (sugar) and help determine if you have gestational diabetes, which may develop during your pregnancy. These glucose tests are routinely done during pregnancy and are recommended by the American College of Obstetricians and Gynecologists (ACOG) for all pregnant women.
What Do the Results of the Glucose Tests Mean?
As the normal range for blood sugar levels detected in the glucose challenge test (the one-hour procedure) and the glucose tolerance test (the three-hour procedure) may vary depending on the lab or clinic, your provider will be your best resource for information and advice on your specific results and recommended next steps in your pregnancy. However, these general guidelines may apply:
What Makes You a High- or Low-Risk Candidate for Gestational Diabetes?
If you may be at high risk for gestational diabetes (sometimes initially suspected after a high glucose level is detected in your urine during a previous prenatal visit), your healthcare provider may also consider certain aspects of your medical history. The provider may take into account your pre-pregnancy weight (whether you were overweight or obese), your age, whether anyone in your family has had gestational diabetes or diabetes, your race or ethnic background (as certain populations are at higher risk), and outcomes of any previous pregnancies. Speak to your healthcare provider to find out whether you have a high risk or low risk of developing gestational diabetes. If the provider determines your risk is low, you may not have to take the glucose challenge test.
How Are the Glucose Challenge and Tolerance Tests Done?
Testing for gestational diabetes during your pregnancy may involve two tests. First, you'll have a glucose challenge test, and if the blood test results of that test show high levels of blood sugar, your healthcare provider may order a second test, the glucose tolerance test.
How Do You Prepare and What Can You Eat Before the Glucose Tests?
In preparation for either of the glucose tests, you can continue to eat normally in the days leading up to the test . There’s no specific prep you need to do or any reason for you to change your pregnancy. However, the glucose tolerance test does require you to fast beforehand. If you’re taking any medications, let your healthcare provider know in advance as some medications may affect test results.
How many times is a glucose test taken?
If the results of your glucose challenge test show levels that are higher than normal, your healthcare provider may order an additional test called a glucose tolerance test. This second, more complex test is a three-hour procedure that begins with a blood sample being drawn. Next, you drink a concentrated sugary solution (8 ounces of water with 100 grams of sugar). Then, your blood is drawn three more times. In total, four blood samples will be taken.
What is the normal glucose level for a glucose challenge test?
What many medical experts consider a normal result for a glucose challenge test is a blood sugar level equal to or less than 140 mg/dL (7.8 mmol/L). The mg/dL means milligrams per deciliter and the mmol/L means millimoles per liter. This is how the glucose is measured in your blood sample. A normal result means you do not have gestational diabetes. If your level is higher than 140 mg/dL (7.8 mmol/L), your healthcare provider may recommend you do the glucose tolerance test, which can help better determine if you have gestational diabetes or not.
How to control blood sugar during pregnancy?
Most pregnant women with GD are able to control their blood sugar through diet and exercise , and if those aren’t enough, medication is an option. In both cases, you’re likely to have a perfectly normal pregnancy and a healthy baby. For most women, a glucose test is usually done between week 24 and week 28 of pregnancy.
What is a glucose screening test?
A glucose screening test is a routine pregnancy test that checks for gestational diabetes (GD). The test checks for higher-than-normal levels of glucose (aka sugar) in your blood, which could mean that you have or are at risk of developing GD. Gestational diabetes can be serious when left unchecked, which is why testing is recommended ...
How does a glucose test work?
Wondering how exactly a glucose test is performed? The glucose screening is simple, especially if you have a sweet tooth.
What does it mean to have glucose in your urine?
At every prenatal appointment, your practitioner will take a sample of your urine to check, in part, for glucose — a possible sign of gestational diabetes.
What is CVS in pregnancy?
Chorionic Villus Sampling (CVS) Gestational diabetes is one of the most common pregnancy complications. When it goes untreated, it can raise the risk of r a number of problems including: Macrosomia or a too-large baby, which can make your delivery more difficult or increase the chances of a C-section.
What percentage of pregnancies have gestational diabetes?
This routine screening checks for gestational diabetes, a condition that affects up to 10 percent of pregnancies, according to the Centers for Disease Control and Prevention (CDC). So what can you expect when it’s time to take your glucose test — and what happens if the results are higher than normal?
How to satisfy cravings during pregnancy?
If your pregnancy cravings leave you with a hefty appetite for carbs (and let’s be honest, there’s a good chance they will), you can satisfy them while still eating well. Try blending banana slices, milk and ice cubes to make a frothy, banana-split-like shake, enjoy half a fresh grapefruit instead of a large glass of OJ, or make a healthier pizza “slice” by topping a whole wheat English muffin with tomato sauce and low-fat mozzarella cheese.
What is the normal glucose level for a pregnancy test?
Most of the time, a normal result for the glucose screening test is a blood sugar that is equal to or less than 140 mg/dL (7.8 mmol/L) 1 hour after drinking the glucose solution. A normal result means you do not have gestational diabetes.
What is a glucose screening test?
A glucose screening test is a routine test during pregnancy that checks a pregnant woman's blood glucose (sugar) level.
What is the next step in glucose tolerance testing?
If your blood glucose is higher than 140 mg/dL (7.8 mmol/L), the next step is the oral glucose tolerance test. This test will show if you have gestational diabetes. Most women (about 2 out of 3) who take this test do not have gestational diabetes. ONE-STEP TESTING.
What does it mean when your glucose is higher than normal?
If more than one of your blood glucose results is higher than normal, you have gestational diabetes.
How many times do you need to go to the lab for a glucose tolerance test?
You need to go to the lab one time for a 2-hour glucose tolerance test. For this test:
How long does it take to get blood glucose checked?
Each time, your blood glucose level will be checked. Allow at least 3 hours for this test.
How long does it take for blood to be drawn after drinking glucose solution?
Your blood will be drawn 1 hour after you drink the glucose solution to check your blood glucose level. If your blood glucose from the first step is too high, you will need to come back for a 3-hour glucose tolerance test. For this test:
What is glucose screening during pregnancy?
Also called the gestational diabetes test, glucose screening is crucial to detecting the often-symptomless pregnancy complication. Learn what these painless tests are, and why it's important to have them done during your second trimester. By Editors of Parents.
How long does it take to get a glucose test for gestational diabetes?
Your blood will then be sampled several times over a period of about three hours and tested for abnormal levels of glucose.
What is the purpose of a glucose tolerance test?
If the test, which screens for gestational diabetes, reveals elevated levels of blood glucose (sugar), a glucose tolerance test is then given to confirm the gestational diabetes diagnosis.
Why is glucose screening important?
Also called the gestational diabetes test, glucose screening is crucial to detecting the often-symptomless pregnancy complication. Learn what these painless tests are, and why it's important to have them done during your second trimester.
How much does a macrosomic baby weigh?
But if the elevated glucose levels remain undetected, the excess sugar in the mother's blood raises the odds of the baby being overly large, or macrosomic — generally 9 pounds, 14 ounces or more. Macrosomic babies may have difficulty fitting through the birth canal and are at risk for health problems such as jaundice, low blood calcium levels, ...
How many pregnant women develop diabetes?
Seven out of every 100 pregnant women will develop it according to March of Dimes, and blood sugar that is not well controlled in a woman with gestational diabetes can lead to problems for the pregnant woman and the baby.
When is glucose test done?
Glucose screening is usually done between 24 and 28 weeks of pregnancy . For this test, you'll be given a syrupy (and a little unpleasant) orange glucose solution to drink. An hour after you've finished drinking the beverage, a blood sample is taken from a vein in your arm, and the glucose level is analyzed.
How do we screen for and diagnose gestational diabetes in pregnancy?
Your doctor will give you a fluid to drink (usually orange- or lime-flavored) that contains concentrated glucose. An hour after you drink it, you’ll have your blood sugar checked. If the glucose value of your blood is higher than 140 mg/dl (140 milligrams of glucose per deciliter of blood), you will need to come back for a three-hour glucose check. During this test, your blood glucose is tested one hour, two hours and three hours after you drink the solution. If two or more of these values show elevated blood glucose, you are diagnosed with gestational diabetes .
What if I am diagnosed with gestational diabetes?
If you screen positive for gestational diabetes, you will be referred for an appointment with a diabetes educator, who will teach you how to check your blood sugar levels daily. You will also learn about the symptoms of high and low blood-sugar levels.
How does gestational diabetes happen?
Your body turns food into sugar (glucose) to use for energy. This glucose goes into your bloodstream. Your body then releases a hormone called insulin to help your body move glucose out of the bloodstream and into the cells, where it fuels basic cellular functions.
What are the risks of gestational diabetes for me and my baby?
Mothers with gestational diabetes have a greater chance of developing preeclampsia (high blood pressure during pregnancy); infections in the urinary tract and vagina; and having very large babies. The baby’s excessive size is called macrosomia. If the baby is too large, childbirth can injure the mother, who may need to have a cesarean section to deliver the baby safely. Your doctor will talk to you about a possible cesarean section so you’ll know what to expect. Occasionally, gestational diabetes can also cause too much fluid to collect around the baby in the womb, which can cause discomfort and preterm labor.
How does glucose go from mother to baby?
Glucose goes from mother to baby through the placenta. The baby uses this sugar to grow, but sometimes the placenta prevents insulin from working properly in the mother’s body, which can result in the mother’s glucose level rising too high. This can cause problems for the mother and the baby.
How long after delivery should you check for diabetes?
About 5 percent of patients who have gestational diabetes in pregnancy will develop diabetes after pregnancy and should be checked for this six to 12 weeks after delivery.
What is the number to call for a pregnancy appointment at Vanderbilt?
For an appointment, call 615-343-5700.
How to balance glucose levels during pregnancy?
Low-impact exercises such as walking and swimming for 30 minutes a day can make a large impact on balancing glucose levels. Patients who are unable to control their glucose levels could need to try medication to aide throughout the rest of their pregnancy.
What percentage of pregnant women have gestational diabetes?
Gestational diabetes is a high blood sugar condition that 2-5 percent of pregnant women develop during pregnancy. Because this condition rarely causes any visible symptoms, performing a glucose test is the only way to find out if a patient has it.
What is a GTT test?
If a patient tests positive for this screening, a glucose tolerance test (GTT) is needed. A GTT is a longer more definitive test that will tell a patient definitively whether or not she has gestational diabetes.
