- Home
- Diabetes Information for Patients Types Symptoms Tests and Treatment
- How to Test Your Risk for Type 1 Type 2 and Gestational Diabetes
Diabetes Risk Test: Type 1, Type 2 and Gestational Diabetes Explained
A diabetes risk test can be useful, but the right test depends on the type of diabetes. The familiar point-based questionnaire estimates the likelihood of type 2 diabetes. It does not assess type 1 diabetes, diagnose prediabetes, or replace glucose testing during pregnancy.
On This Page
One Page, Three Different Diabetes Assessments
The word “risk” can be confusing because it is used in different ways. A questionnaire may estimate how closely your health profile resembles that of people with type 2 diabetes. An autoantibody test can detect an early autoimmune process associated with type 1 diabetes. During pregnancy, glucose testing looks for abnormal glucose metabolism or gestational diabetes.
| Diabetes type | Main screening approach | What the result means |
|---|---|---|
| Type 1 diabetes | Blood testing for islet autoantibodies in selected people | Shows evidence of diabetes-related autoimmunity and whether specialist follow-up is needed |
| Type 2 diabetes | Validated risk questionnaire followed by A1C, fasting plasma glucose, or an oral glucose tolerance test when appropriate | A score estimates risk; only laboratory testing can identify prediabetes or diabetes |
| Gestational diabetes | Pregnancy-specific glucose challenge or oral glucose tolerance testing | Evaluates glucose regulation during pregnancy using pregnancy-specific criteria |
How the Type 2 Diabetes Risk Test Works
The American Diabetes Association (ADA) risk test asks seven short questions. It gives points for age, sex, a history of gestational diabetes or delivering a baby weighing 9 pounds (about 4.1 kg) or more, a first-degree family history of diabetes, high blood pressure, physical inactivity, and weight in relation to height.
Factors you cannot change
Age and family history help identify inherited or background risk. They should encourage appropriate screening, not blame.
Factors that can change
Activity, weight, blood pressure, sleep, eating patterns, and some medicines may affect type 2 diabetes risk over time.
The score’s purpose
The score helps decide who should speak with a clinician about a blood test. It does not measure glucose.
Age points
| Age | ADA risk-test points |
|---|---|
| Younger than 40 | 0 |
| 40–49 | 1 |
| 50–59 | 2 |
| 60 or older | 3 |
Other questions and points
- Man: 1 point; woman: 0 points.
- Previous gestational diabetes or delivery of a baby weighing at least 9 pounds: 1 point.
- Mother, father, sister, or brother with diabetes: 1 point.
- Previous diagnosis of high blood pressure: 1 point.
- Not physically active: 1 point.
- Weight category: 0–3 points using the test’s height-and-weight chart.
The sex question reflects patterns in the population used to develop the tool; it is not a judgment about an individual. Race and ethnicity are not assigned points in this short ADA questionnaire, but clinicians consider ancestry because type 2 diabetes develops more often—and sometimes at a lower body mass index—in some populations.
You can also use our online type 2 diabetes risk calculator. Remember that different validated tools, such as the ADA test or FINDRISC, use different questions and cutoffs. Do not compare category labels across calculators as if they were identical.
Who should have laboratory screening?
Current ADA guidance recommends type 2 diabetes screening for all adults beginning at age 35. Adults of any age with overweight or obesity should be screened earlier when they have one or more risk factors, such as a first-degree family history, high blood pressure, cardiovascular disease, physical inactivity, polycystic ovary syndrome, abnormal cholesterol or triglycerides, or signs of insulin resistance.
People with prediabetes are generally retested every year. If a screening result is normal, repeating screening at least every three years is reasonable, or sooner if symptoms or risk factors change. Children and adolescents with overweight or obesity plus additional risk factors may need screening after puberty begins or from age 10, whichever comes first; their assessment should be arranged by a pediatric clinician.
Blood Tests That Diagnose Prediabetes or Diabetes
A questionnaire cannot tell you whether your glucose is normal. Clinicians use laboratory testing. The common nonpregnancy thresholds below apply to adults and children who are not pregnant; pregnancy uses different criteria.
| Laboratory test | Normal | Prediabetes | Diabetes range |
|---|---|---|---|
| A1C | Below 5.7% | 5.7%–6.4% | 6.5% or above |
| Fasting plasma glucose | 99 mg/dL or below | 100–125 mg/dL | 126 mg/dL or above |
| 2-hour glucose after a 75-g OGTT | 139 mg/dL or below | 140–199 mg/dL | 200 mg/dL or above |
| Random plasma glucose | Not used to define a normal range | Not used to diagnose prediabetes | 200 mg/dL or above with classic symptoms or hyperglycemic crisis |
Unless high glucose is unequivocal and accompanied by classic symptoms or a hyperglycemic crisis, a result in the diabetes range usually needs confirmation with a second abnormal measurement. A home glucose meter is valuable for monitoring but is not used by itself to diagnose diabetes. Read our full guide to blood tests for diabetes, including when A1C may be unreliable, or review normal fasting blood sugar levels.
Type 1 Diabetes Risk: Autoantibody Screening, Not a Point Score
Type 1 diabetes is primarily an autoimmune disease. The immune system targets the pancreatic beta cells that make insulin. Viral and environmental exposures are being studied as possible contributors, but type 1 diabetes is not simply caused by a viral infection, excess sugar intake, or a lack of exercise.
Current ADA guidance says screening for presymptomatic type 1 diabetes should be offered to people with a family history of type 1 diabetes or another known elevated genetic risk. The blood test looks for autoantibodies against insulin, glutamic acid decarboxylase (GAD), islet antigen 2 (IA-2), or zinc transporter 8 (ZnT8). A positive result needs confirmation and clinical interpretation.
| Stage | What clinicians find | Symptoms |
|---|---|---|
| Stage 1 | Multiple confirmed islet autoantibodies with glucose still in the normal range | None |
| Stage 2 | Islet autoimmunity plus glucose abnormalities that are not yet stage 3 diabetes | Usually none |
| Stage 3 | Diabetes-range hyperglycemia | Often thirst, frequent urination, weight loss, fatigue, or other symptoms |
Multiple confirmed autoantibodies indicate a high risk of progression and should lead to referral to a specialized diabetes center for metabolic staging, education, monitoring, and discussion of approved treatment or research options. Selected people with stage 2 type 1 diabetes may be eligible for teplizumab, a treatment that can delay progression to symptomatic stage 3 disease; this requires specialist evaluation and safety monitoring.
A family history increases risk, but most people who develop type 1 diabetes do not have a known affected relative. In the United States, TrialNet’s Pathway to Prevention offers no-cost screening to eligible relatives and some people who have already tested positive for an autoantibody. Eligibility depends on age and degree of relationship.
Gestational Diabetes Risk and Pregnancy Testing
A general diabetes risk score cannot clear someone for gestational diabetes. Pregnancy changes insulin needs, and gestational diabetes often causes no obvious symptoms. That is why screening is based on pregnancy timing and glucose testing, not symptoms alone.
People planning pregnancy should discuss screening for undiagnosed prediabetes or diabetes, especially when risk factors are present. During pregnancy, current ADA guidance recommends testing before 15 weeks for people with risk factors and consideration of early testing for everyone who was not screened before conception. Pregnant people not previously found to have diabetes or high-risk abnormal glucose metabolism should be screened for gestational diabetes at 24–28 weeks.
Risk factors that deserve early discussion
- Previous gestational diabetes or a previous large-for-gestational-age baby.
- Overweight or obesity, particularly with additional metabolic risk factors.
- A parent or sibling with diabetes.
- Polycystic ovary syndrome, high blood pressure, cardiovascular disease, or signs of insulin resistance.
- Previous prediabetes or abnormal glucose results.
Clinicians may use a one-step 75-g oral glucose tolerance test or a two-step pathway that begins with a nonfasting 50-g glucose challenge and, if elevated, proceeds to a fasting 100-g oral glucose tolerance test. The interpretation depends on the method used. Do not apply the nonpregnancy A1C or fasting-glucose table to a gestational diabetes test.
See our detailed gestational diabetes test guide. If gestational diabetes is diagnosed, follow the pregnancy care plan developed with your obstetric and diabetes teams; our overview of gestational diabetes treatment explains the main principles. After delivery, a 75-g oral glucose tolerance test is recommended at 4–12 weeks, followed by lifelong diabetes screening every 1–3 years.
What to Do After a Diabetes Risk Test
If your type 2 score is 5 or higher
- Arrange a healthcare appointment and ask whether A1C, fasting plasma glucose, or an oral glucose tolerance test is appropriate.
- Bring your medicine list, family history, pregnancy history, and any previous glucose results.
- Do not start diabetes medication or supplements based only on a score.
- Begin realistic health-supporting habits while you wait; you do not need to wait for a diagnosis to improve sleep, food quality, activity, or smoking status.
If your score is below 5
Do not interpret it as “no risk.” Arrange testing if you have symptoms, are 35 or older, previously had gestational diabetes, have overweight or obesity plus another risk factor, or have been advised to screen by your clinician. Reassess when your age, weight, medicines, blood pressure, or health history changes.
If a laboratory test shows prediabetes
Prediabetes is a laboratory finding, not a “moderate” questionnaire score. A structured lifestyle program can make a meaningful difference. In the Diabetes Prevention Program, adults at high risk who achieved about 5%–7% weight loss and at least 150 minutes of moderate activity per week reduced the incidence of type 2 diabetes by 58%. The right plan should account for your mobility, heart health, medicines, pregnancy status, culture, budget, and eating preferences.
Use weight measures carefully
BMI is a screening measure, not a direct measurement of body fat or health. Waist size may add useful information about abdominal fat, while neither measure should be used to shame anyone. Our BMI and waist-to-height calculator can help you prepare questions for your next appointment.
Symptoms Override the Score
Seek same-day medical assessment for new marked thirst, frequent urination, unexplained weight loss, unusual fatigue, or blurry vision. Go to emergency care immediately for vomiting with inability to keep fluids down, abdominal pain, fast or deep breathing, fruity-smelling breath, confusion, severe drowsiness, or high ketones. These may signal diabetic ketoacidosis, a life-threatening emergency that is especially associated with type 1 diabetes.
The value of a risk test is not the number itself—it is the action that follows. I encourage patients to use a score as a conversation starter: “Do my age, family history, blood pressure, pregnancy history, or symptoms mean I need a laboratory test now?” A normal score should not dismiss symptoms, and an increased-risk score should not create panic. The safest next step is a correctly chosen test interpreted in your full clinical context.
Frequently Asked Questions
Can an online diabetes risk test diagnose diabetes?
No. A questionnaire estimates type 2 diabetes risk from personal characteristics and health history. Prediabetes and diabetes are diagnosed with laboratory blood tests, and an abnormal result often needs confirmation.
Does a score below 5 mean I do not have diabetes?
No. A score below 5 means the short ADA questionnaire did not reach its increased-risk cutoff. It does not measure blood glucose and cannot rule out prediabetes or diabetes. Symptoms, age, pregnancy history, and other risk factors may still justify testing.
Does a score of 5 or more mean I have type 2 diabetes?
No. It means you have an increased risk of having type 2 diabetes and should discuss laboratory testing with a healthcare professional. It is not a diagnosis.
Can the ADA risk test tell me whether I have prediabetes?
No. Prediabetes is identified by A1C, fasting plasma glucose, or a 2-hour oral glucose tolerance test. A questionnaire score should not be labeled as prediabetes.
How can a relative of someone with type 1 diabetes be screened?
Ask about islet-autoantibody screening. Current guidance supports offering screening to people with a family history of type 1 diabetes or another known elevated genetic risk. Eligible relatives in the United States may also use TrialNet’s Pathway to Prevention program.
Can lifestyle changes prevent type 1 diabetes?
No diet, supplement, or exercise program has been proven to prevent autoimmune type 1 diabetes. Healthy habits support general health, but they do not replace autoantibody screening, glucose monitoring, or specialist care when type 1 risk is identified.
Do all pregnant people need gestational diabetes screening?
Pregnant people who have not already been found to have diabetes or high-risk early glucose abnormalities are generally screened at 24–28 weeks. Earlier testing may be recommended before 15 weeks, particularly when risk factors are present.
How often should I repeat diabetes screening?
People with prediabetes are generally tested yearly. If type 2 screening is normal, repeating at least every three years is reasonable, sooner if symptoms or risk changes occur. After gestational diabetes, testing is recommended 4–12 weeks after delivery and then every 1–3 years for life. Type 1 autoantibody follow-up follows a specialist plan.
Related Questions and Resources
References
- American Diabetes Association Professional Practice Committee. Diagnosis and Classification of Diabetes: Standards of Care in Diabetes—2026. Diabetes Care. 2026;49(Suppl 1):S27–S49.
- National Institute of Diabetes and Digestive and Kidney Diseases. Diabetes Tests & Diagnosis.
- National Institute of Diabetes and Digestive and Kidney Diseases. Diabetes Risk Test.
- Type 1 Diabetes TrialNet. Pathway to Prevention: Type 1 Diabetes Risk Screening.
- Centers for Disease Control and Prevention. Prediabetes—Your Chance to Prevent Type 2 Diabetes.
- Centers for Disease Control and Prevention. Diabetic Ketoacidosis.