My A1c is in the prediabetes range. What should happen next?

What did the test measure?

A1c measures the proportion of hemoglobin with glucose attached to it. Hemoglobin is the protein in red blood cells that carries oxygen. The result reflects average blood glucose over roughly the previous three months; it does not show every rise and fall during the day.

For someone who is not pregnant, an A1c below 5.7% falls below the prediabetes range. A result from 5.7% through 6.4% is in the prediabetes range. An A1c of 6.5% or higher meets a laboratory criterion for diabetes, which usually needs confirmation when there are no clear symptoms.

Prediabetes means glucose is above the usual range and the chance of developing type 2 diabetes is higher. Progression is not inevitable. The actual number, its trend and the rest of your history help guide the next conversation.

Sources: 1, 2

Do we need to confirm it or compare another test?

Ask whether the result should be repeated or compared with a fasting glucose or oral glucose tolerance test. These tests measure different aspects of glucose regulation and do not always place a person in the same category.

When a result meets the diabetes threshold without clear symptoms, clinicians generally confirm it with another abnormal result. A result close to a cutoff may call for reassessment within months. Your clinician can explain the timing for a prediabetes result based on how close it is to the diabetes range and whether it has been changing.

Bring previous reports with dates and mention whether a glucose test was fasting. A laboratory A1c percentage and a reading from a home glucose meter are different measurements; one should not simply be substituted for the other.

Sources: 1, 2

Could something make the A1c harder to interpret?

Changes in red blood cells can change A1c independently of glucose. Recent blood loss or a transfusion, some hemoglobin variants, significant iron deficiency and certain kidney or liver problems can interfere with interpretation. A clinician may use glucose-based testing when A1c is unreliable.

Mention heavy bleeding, an anemia diagnosis, recent delivery or anything else that changed around the test. If A1c and glucose readings disagree, the answer is to investigate the mismatch. Do not assume either result is meaningless or that the higher number automatically tells the whole story.

Sources: 1, 2

Your pregnancy history can change the conversation

Tell your clinician if you had gestational diabetes, even if glucose returned to normal after delivery. That history helps identify people who may benefit from closer prevention and follow-up. Bring the pregnancy year and any postpartum test result you can find.

Testing soon after gestational diabetes follows a specific postpartum pathway. A1c alone is not the preferred early postpartum test because pregnancy and delivery can affect it. If you recently delivered, ask your maternity team which test and timing are appropriate.

If the pregnancy was years ago, begin with what you know now. Missing records should not keep you from raising the history or asking how it fits your current result.

Sources: 3, 5

Read the specific follow-up guidance after gestational diabetes

What can help lower the chance of diabetes?

A structured prevention program offers more than a suggestion to eat better. It can help you work on food choices, physical activity and weight management when appropriate, with coaching and follow-up. Ask about a recognized diabetes prevention program or a registered dietitian who can work with your preferences, schedule and medical needs.

In the Diabetes Prevention Program, an intensive lifestyle program reduced the development of type 2 diabetes by 58% compared with placebo over about three years. Participants were adults at high risk; this relative reduction does not predict an individual woman’s outcome. The program aimed for 7% weight loss and at least 150 minutes of activity weekly, with substantial support.

Use that evidence to ask for help building a realistic plan. The starting point may be a change in drinks, a meal pattern you can sustain or activity that fits your current capacity. The plan should take account of pregnancy, recovery, disability and other health conditions.

Sources: 3, 4

Do I need medicine, and when do we check again?

Some people at higher risk are offered metformin for prevention. The 2026 ADA guidance highlights groups such as people with prior gestational diabetes and those with higher glucose, higher A1c or substantial excess weight. It is a discussion based on the whole picture, not an automatic prescription for every prediabetes result.

The ADA recommends checking for diabetes at least annually in people with prediabetes, with timing adjusted to individual risk. Your clinician may arrange an earlier check to clarify a result or assess a change in your plan.

Blood pressure, cholesterol and tobacco exposure also deserve attention. Improving one glucose result does not replace the rest of cardiovascular prevention. Ask which part of your health needs attention first and how the care team will help you follow through.

Sources: 3

Bring the number, the date and your question

Write down your result, when it was taken and what you were told. Add earlier results, medicines, relevant pregnancy details and anything that could affect interpretation. Bring one question you most want answered.

Before the visit ends, confirm the next action, the date and who will review the result. A plan is easier to use when it tells you what to do between now and the next conversation.

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