Your Blood Test Results: Cholesterol, Blood Sugar, and More - Family Medicine

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Blood test issues


Hello Dr.
Chen: I recently received my blood donation report, which shows total cholesterol at 188 mg/dL, LDL-C at 132 mg/dL, glycated hemoglobin (HbA1c) at 5.9%, blood pressure at 115/77 mmHg, and ALT at 13 U/L.
I would like to ask:
1.
Do these results indicate that I have hyperlipidemia or cardiovascular issues? I usually check my fasting blood sugar with a glucose meter, and it is between 80-90 mg/dL, but my HbA1c suggests prediabetes.
What should I be aware of?
2.
Should I consult with a metabolic specialist?
3.
How long should I wait before retesting?
4.
What are the target blood sugar and HbA1c levels for diabetic patients? What clinical symptoms should I be aware of if a diabetic patient is underweight?
I apologize for asking so many questions; I’m a bit overwhelmed after receiving the report.
Thank you!

Xiao Min, 40~49 year old female. Ask Date: 2017/08/24

Dr. Chen Taicheng reply Family Medicine


● Total cholesterol is generally considered normal if it is ≤200 mg/dL, and LDL-C is considered normal if it is ≤130 mg/dL, indicating only a slight increase.
This is not classified as high lipid levels, and given your age, your cardiovascular risk is generally low.

● The normal value for hemoglobin A1c is ≤5.6%.
A level between 5.7% and 6.4% indicates prediabetes, while a level ≥6.5% indicates diabetes.
However, this should be confirmed with at least two tests showing elevated levels.
The blood glucose meter should be calibrated, and it is possible that your postprandial blood glucose is slightly elevated (normal value ≤140 mg/dL; 141-199 mg/dL indicates prediabetes; ≥200 mg/dL indicates diabetes).

● Dietary and exercise control, along with weight loss, can improve blood glucose levels.
Follow-up can be done every 3-6 months at a family medicine, internal medicine, or endocrinology clinic.

● The general fasting blood glucose target for diabetes patients is 80-130 mg/dL; postprandial blood glucose is generally <180 mg/dL; and hemoglobin A1c should be ≤7%.
However, these targets should be individualized.

● If a diabetes patient experiences continuous weight loss, it usually indicates poor blood glucose control and elevated levels; this can lead to increased urination and dehydration, and sometimes complications from high blood sugar.
Please seek medical attention.
Wishing you good health, Dr.
Chen Tai-Cheng from Taoyuan Hospital Family Medicine Department cares about you.

Reply Date: 2017/08/24

More Info


Understanding your blood test results can be daunting, especially when it comes to interpreting values related to cholesterol, blood sugar, and other important markers. Let's break down the key components of your results and what they mean for your health.

1. Cholesterol Levels: Your total cholesterol level is 188 mg/dL, which is generally considered acceptable as it falls below the threshold of 200 mg/dL. However, your LDL-C (low-density lipoprotein cholesterol) is at 132 mg/dL. LDL is often referred to as "bad" cholesterol because high levels can lead to plaque buildup in your arteries, increasing the risk of heart disease. Ideally, LDL levels should be below 100 mg/dL for optimal heart health. Therefore, while your total cholesterol is within a normal range, your LDL level is on the higher side, which could indicate a risk for cardiovascular issues.

2. Blood Sugar and Glycated Hemoglobin (HbA1c): Your fasting blood sugar levels are between 80-90 mg/dL, which is considered normal. However, your HbA1c level of 5.9% suggests that you are in the prediabetic range (5.7% to 6.4%). This means that while your blood sugar levels are currently normal, they are on the higher side over time, indicating a risk for developing type 2 diabetes. It is crucial to monitor your diet, maintain a healthy weight, and engage in regular physical activity to help manage your blood sugar levels.

3. Consulting a Specialist: Given your elevated LDL levels and prediabetic HbA1c, it would be wise to consult with a specialist in metabolic health or endocrinology. They can provide a comprehensive evaluation of your risk factors and may recommend lifestyle changes or medications to help manage your cholesterol and blood sugar levels effectively.

4. Follow-Up Testing: If you are considering retesting your cholesterol and blood sugar levels, it is generally recommended to wait about 3 months after making any significant lifestyle changes (like diet and exercise) to see if there is an improvement. This timeframe allows your body to adjust and can provide a clearer picture of your health status.

5. Diabetes Management: For individuals diagnosed with diabetes, the American Diabetes Association recommends aiming for an HbA1c level of less than 7% to reduce the risk of complications. Blood sugar targets can vary based on individual circumstances, but generally, fasting blood sugar levels should be between 80-130 mg/dL.

6. Weight Considerations: If a diabetes patient is underweight, it is essential to monitor for symptoms such as fatigue, weakness, or malnutrition. Underweight individuals may also face challenges in managing their blood sugar levels, as insufficient body fat can lead to unstable glucose levels. It is crucial to work with a healthcare provider to ensure that dietary needs are met and to develop a plan that supports healthy weight management.

In summary, your results indicate that while you are not currently diabetic, you are at risk and should take proactive steps to manage your cholesterol and blood sugar levels. Regular monitoring, lifestyle changes, and consultations with healthcare professionals can help you maintain your health and prevent the onset of more serious conditions. Don't hesitate to ask your healthcare provider any further questions you may have about your results or health management strategies.

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