Prediabetes: A1C and Blood Sugar Ranges Explained in Loxahatchee, West Palm Beach & Belle Glade, FL

What it involves

Prediabetes means your blood sugar is higher than normal but not yet in the diabetes range. NIDDK says it is serious because it raises the chance of developing type 2 diabetes, and it also says type 2 diabetes can be prevented. The goal of a visit is to read your numbers, explain them, and set a plan and a retest date.

Who this is for

• Patients whose lab report shows an A1C or fasting glucose above the normal range
• Adults who have never had a blood sugar test and have family members with diabetes
• Patients with excess weight, high blood pressure, or high cholesterol who want to know their sugar status
• Patients told they have prediabetes who are not sure what to do next

What to expect

• A review of your lab report, history, medicines, and family history of diabetes
• A discussion of which test result puts you in which range
• A decision on whether to repeat or add a test to confirm
• A plan for the next test date and for the habits that matter most to you

The A1C ranges NIDDK publishes

The A1C test reflects your average blood sugar over about the last three months. NIDDK gives these ranges:

• Normal: below 5.7 percent
• Prediabetes: 5.7 to 6.4 percent
• Diabetes: 6.5 percent or above

Fasting glucose and the glucose tolerance test

Other tests use different numbers. NIDDK lists a fasting plasma glucose of 99 milligrams per deciliter or below as normal, 100 to 125 as prediabetes, and 126 or above as diabetes. For the oral glucose tolerance test, measured two hours after a sugary drink, 139 or below is normal, 140 to 199 is prediabetes, and 200 or above is diabetes. The tests measure different things, so they do not always agree. Fasting glucose is also one of the eight results on a basic metabolic panel, and the basic metabolic panel explained page shows how that line reads alongside calcium, kidney, and electrolyte numbers.

Why one result is not the whole answer

NIDDK says a doctor usually uses a second test to confirm a diabetes diagnosis, because different tests use different measurement standards. For the same reason, a prediabetes result is a reason to talk and plan, and not a reason to panic. If your fasting test was borderline, your provider may order an A1C or repeat the test, and explains why. A urine test is sometimes part of the picture too, and the urinalysis guide explains what the dipstick checks for, including glucose, protein, and ketones.

Why it is worth acting on

NIDDK says people with prediabetes should be tested every year for type 2 diabetes. That is a simple, scheduled step. The same agency says type 2 diabetes can be prevented, which is the reason to look at habits early, while there is still room to change the numbers. Your provider helps you pick changes you can keep, and does not promise a result. Weight is one of the factors NIDDK links to blood sugar, and the obesity and BMI guide explains how much weight loss is associated with lower diabetes risk.

How this fits with other visits

If a retest moves you into the diabetes range, ongoing care is described in diabetes management. Blood sugar is also tied to blood pressure and heart risk, covered in the hypertension guide and the heart disease risk review. A yearly checkup is a natural place to repeat it, as the annual physical visit describes. Unexplained tiredness is a common reason an A1C gets checked, and the fatigue and tiredness evaluation guide lists the other causes a provider rules in or out alongside blood sugar. Frequent urination and unusual thirst are symptoms worth mentioning at a blood sugar visit, and the frequent urination guide explains what a bladder diary adds.

What to bring and how to prepare

• Your lab report, or the date and place of the test
• A list of medicines and supplements, since some affect blood sugar
• Notes on which relatives have diabetes
• Questions about food, activity, or sleep you want to talk through
• Ask the office whether your next test needs fasting, then see the [[fasting blood work preparation guide|/fasting-blood-work-preparation/]]

Sources

• NIDDK — Diabetes Tests & Diagnosis