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How do I know if I have diabetes at age 75 with an A1c of 5.8%?
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General Health
Question #30858
22 days ago
118

How do I know if I have diabetes at age 75 with an A1c of 5.8%?

Client_17ff20

I am Kevan Gaug, age 75. My primary physician stated on May 4, 2026 as follows: "Type 2 diabetes mellitus with other circulatory complications (HCC) (E11.59) - HbA1c improved from 5.9% to 5.8%; glucose decreased from 118 to 109 mg/dL. ⁃ Continue metformin as prescribed. Continue dietary modifications." As I recall, without concrete evidence, I was diagnosed as prediabetic - not Type 2 diabetes mellitus. I have been taking 500mg of Metformin 1x daily for the since 2022 (at least). My A1c tests 2x year reveal an A1c level between 5.4 but never higher millions. An A1C concurrent test result of greater than or equal to 6.5% usually results in a diagnosis of diabetes. At age 75, recommended A1c targets are typically more relaxed (between 7.5% and 8.5%). Clinically, from health professional diagnosis, do I have diabetes?

When were you first diagnosed with prediabetes or diabetes?:

- More than 5 years ago

Have you experienced any symptoms of diabetes, such as increased thirst or frequent urination?:

- No, never

How often do you monitor your blood glucose levels?:

- Monthly

Have you made any significant lifestyle changes since your diagnosis?:

- No changes at all

What other health conditions do you have, if any?:

- None

Are you currently taking any other medications besides Metformin?:

- Yes, one or two additional medications

How would you describe your overall health and energy levels?:

- Good
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Doctors' responses

Hello

Based on the information you provided, your current laboratory values (HbA1c 5.8% and fasting glucose 109 mg/dL) fall within the prediabetes range, not the diagnostic range for diabetes. Diabetes is typically diagnosed by an HbA1c ≥6.5%, a fasting plasma glucose ≥126 mg/dL, a 2-hour glucose ≥200 mg/dL during an oral glucose tolerance test, or a random glucose ≥200 mg/dL with classic symptoms, confirmed on repeat testing unless unequivocal.

It is possible that your physician documented Type 2 diabetes because you had diagnostic blood glucose values in the past that are not reflected in your current results, or the diagnosis has been retained in your medical record because you are being treated with metformin. If you have never met diagnostic criteria for diabetes, then your current results are more consistent with prediabetes.

I recommend asking your physician to clarify what test or historical result established the diagnosis of Type 2 diabetes. Continue taking metformin as prescribed until this is reviewed, as stopping it without medical advice is not recommended. Your current glycemic control is excellent, regardless of whether this represents well-controlled diabetes or prediabetes.

Take care Feel free to reach out again

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Hello Based on the information you’ve provided, it seems that your primary physician has diagnosed you with Type 2 diabetes mellitus, given the HbA1c level of 5.8% and the glucose level of 109 mg/dL. Here’s a breakdown of the situation:

1. Diagnosis of Diabetes: - The standard criteria for diagnosing diabetes include an HbA1c of 6.5% or higher, a fasting glucose level of 126 mg/dL or higher, or a 2-hour glucose level of 200 mg/dL or higher during an oral glucose tolerance test. - Your HbA1c of 5.8% is below the 6.5% threshold, which typically indicates that you do not have diabetes. However, your physician may have considered other factors, such as your glucose levels and any complications, in making the diagnosis.

2. Prediabetes vs. Diabetes: - Prediabetes is usually indicated by an HbA1c of 5.7% to 6.4%. Since your levels have been consistently below 6.0%, it suggests that you may still be in the prediabetic range, especially if you have not had any significant complications.

3. Age Considerations: - At age 75, the targets for HbA1c can indeed be more relaxed, as you mentioned. Many healthcare providers aim for an HbA1c of 7.5% to 8.5% in older adults, especially if they have other health issues.

4. Current Management: - Continuing metformin and dietary modifications is a common approach to managing blood sugar levels and preventing the progression of diabetes.

### Conclusion: From a clinical perspective, based on your HbA1c levels, you may not meet the criteria for diabetes. However, your physician’s diagnosis may take into account other factors, including your overall health and any complications. It would be beneficial to have a discussion with your primary physician to clarify your diagnosis and management plan, especially if you feel that you are still in the prediabetic range.

Thank you

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Based on the details you’ve shared, there’s a bit of a disparity in what’s listed by your physician and your personal recall. Clinically, an A1c of 6.5% or higher is indeed used as a threshold for diagnosing diabetes. With your current A1c of 5.8%, this falls within the prediabetic range, generally between 5.7% and 6.4%. However, ongoing use of metformin indicates treatment aligned with either diabetes or prediabetes management, perhaps as some physicians may initiate treatment to prevent progression. It’s crucial to clarify this with your healthcare provider. Miscommunications can happen, especially with long-term medical records. The note about other circulatory complications suggests careful monitoring of your vascular health, which can be a consideration in diabetes management but doesn’t solely define a diabetic status. The typical relaxed A1c targets in elderly patients are more about balancing treatment benefits against risks and avoiding hypoglycemia. It doesn’t automatically suggest current diabetic status. You might want to discuss directly with your healthcare professional to reconcile their documentation with your understanding, and confirm your diagnoses status whether it’s prediabetes or diabetes, especially since treatment has implications on your daily life and management goals.

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Hello Kevan, Based on the information you’ve provided, I understand why you’re questioning the diagnosis.

According to current diagnostic criteria, Type 2 diabetes is typically diagnosed if any of the following are present (and usually confirmed on repeat testing unless symptoms are obvious): - HbA1c ≥6.5% - Fasting plasma glucose ≥126 mg/dL (7.0 mmol/L) - 2-hour glucose during an oral glucose tolerance test ≥200 mg/dL (11.1 mmol/L) - Random plasma glucose ≥200 mg/dL with classic symptoms of diabetes.

Your reported results are: - HbA1c consistently 5.4–5.9% - Recent HbA1c 5.8% - Fasting glucose 109 mg/dL

These values are within the prediabetes range, not the diagnostic range for diabetes. However, there is one important exception. If you previously met the diagnostic criteria for diabetes (for example, before starting metformin) and your blood sugar improved because of treatment, your physician may continue to diagnose you as having Type 2 diabetes that is well controlled. In that situation, the diagnosis does not disappear simply because the HbA1c has normalized. On the other hand, if you have never had an HbA1c ≥6.5%, a fasting glucose ≥126 mg/dL, or another diagnostic test confirming diabetes, then your current laboratory values alone support prediabetes rather than diabetes.

I would recommend asking your physician: “Could you clarify whether I previously met the diagnostic criteria for Type 2 diabetes, or was I diagnosed with prediabetes and started on metformin to reduce my risk?”

This distinction is important because it affects your medical record and future care.

Prescription/Advice: - Continue taking Metformin 500 mg once daily unless your physician advises otherwise. - Continue healthy diet, regular physical activity, and weight management. - Continue periodic HbA1c and fasting glucose monitoring. - Request a review of your previous medical records to determine whether diabetes was ever formally diagnosed based on diagnostic criteria.

Feel free to reach out again.

Regards, Dr. Nirav Jain Family Medicine Specialist

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Hello dear See as per clinical history Following findings are there Rebound hyperglycemia Uncontrolled diabetes Weaknesses and confusion Insulin resistance Iam suggesting some tests for confirmation Please share the result with diabetologist or concerned physician only for better clarity Please donot stop it take any medication without consulting the concerned physician HbA1c Serum ferritin Serum insulin Rft Lft Serum rbs Ott Hopefully you recover soon Regards

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