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Doctor insights on: What Can Cause A High A1c Test

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What can cause a high hemoglobin A1c test?

What can cause a high hemoglobin A1c test?

Poor sugar control: Hemoglobin A1c measures average blood sugar over approximately the past 3 months. It is the measure of how much hemoglobin is attached to sugar molecules in the blood. Sugar in your blood binds to the hemoglobin of the red blood cell and stays there throughout the cell's lifetime (120 days). At high levels of blood sugar, more reacts w/ the hemoglobin, causing an elevated hemoglobin a1c. ...Read more

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Dr. Ira Katz
512 doctors shared insights

Hemoglobin A1c (Definition)

It helps determine the average blood sugar over a long period of time, about 2 or ...Read more


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What can cause an A1c test be high (7) and daily blood glucose low (80-100)?

What can cause an A1c test be high (7) and daily blood glucose low (80-100)?

Blood glucose: The a1c is an average of all your blood sugars over about 2 months. How often do you test your glu? You can't measure your glu 24/7. An a1c of 7.0 is actually fairly good. I suspect there is a time of day when your glu values are higher than you may realize. Most commonly this is during the night, maybe early am. This is called the dawn phenomenon. ...Read more

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On a routine test they told me I have an elevated A1c of 5.7, what does it mean?

A1C: A1C is a way to measure the average blood sugar over a 3 -4 month period of time. This is a measure of the sugar attached to the red blood cells. This means that your blood sugar is running too high and you need to start paying attention to your diet. You should also have your doctor measure a fasting insulin level. ...Read more

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What are the causes of normal A1c and high fasting glucose?

Several causes: The correlation between a1c and FBS is not perfect. A1c is like a glu average. If you have frequent hypoglycemia, then that may be "balancing" the high glu. Another possibility is a hemoglobinopathy. There are many causes of abnormal hemoglobin, most common is sickle trait, which cause no symptoms but mess up the a1c. An alternate to the a1c is a measure of fructosamine. ...Read more

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Will glucose of 118 and hgb A1c of 5.7 cause a high total bilirubin number?

Will glucose of 118 and hgb A1c of 5.7 cause a high total bilirubin number?

No: This is excellent diabetes control (if diabetic), borderline sugar if not diabetic. Elevated bilirubin, your doctor needs to find the cause. Gilbert syndrome may have slight high bilirubin (normal variant usually <3). Liver disease, gallstone obstruction : needs attention talk to your doctor. ...Read more

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Can a high level of A1c cause delayed puberty or a late bloomer?

Can a high level of A1c cause delayed puberty or a late bloomer?

Absolutely!: Poorly controlled diabetes is notoriously known for delaying growth and puberty. It is only one of the many important reasons to keep diabetes in control in kids. ...Read more

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Blood work & urine test normal except Glucose 158, A1c 7.4. Heard nothing from my Dr.who is a Nephologist, specials are high B/P & Diabetes. scared?

Blood work & urine test  normal except Glucose 158, A1c 7.4. Heard nothing from my  Dr.who is a Nephologist, specials are high B/P & Diabetes. scared?

Diabetes: All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Having said that, a Hb A1c level of 7.4 is diabetes, unless proven otherwise. You should contact your doctor to ensure proper treatment. Wish you good health. ...Read more

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High A1c over 13 but numbers don't correlate, MRI and us abdomen are normal, what are other causes. On metformin and starlix (nateglinide) check bs 4x per day.

High A1c over 13 but numbers don't correlate, MRI and us abdomen are normal, what are other causes. On metformin and starlix (nateglinide) check bs 4x per day.

Closer monitoring: First, make sure your meter is working right. How old is it? Test it against your doctor machine to compare accuracy. Second, the numbers don't correlate possibly because you don't check it at the right time. Try to check a few numbers 2 hours after you eat. This might be where your problem is. A continuous glucose monitor for 1 week is also an option for you to check for trends. ...Read more

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Blood test showed low hemoglobin A1c (4.4%) Everything else was normal. What could cause this?

Blood test showed low hemoglobin A1c (4.4%) Everything else was normal. What could cause this?

Nothing bad: actually the low level does not mean much higher level could indicate that you average blood suger could be higher than normal and it depend how high it is lower level could indicate normal or slightly lower blood sugar and most of the time it is normal the test is design to check average blood sugar for the last 1-2 weeks and the sensitivity and the accuracy of the test is higher in high BS ...Read more

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Does a normal fasting glucose and normal A1c test rule out diabetes as a cause of neuropathy?

Does a normal fasting glucose and normal A1c test rule out diabetes as a cause of neuropathy?

Generally yes: Hi. Neuropathy is the most poorly understood diabetic complication, and I've seen weird cases. Nevertheless, if your fasting glucose and and A1c are normal, I'd say the chance your neuropathy is due to diabetes is very, very low. ...Read more

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Had a bad cold for a month and noticed new A1C test went up for no reason. can prolonged upper respiratory infection cause blood glucose increase?

Had a bad cold for a month and noticed  new A1C test went up for no reason. can prolonged upper respiratory infection cause blood glucose increase?

Recheck: It may cause a change in blood glucose levels which can be then reflected in test results. I would recommend a recheck two weeks after you recover. A virtual appt in available online for follow up healthtap.com/DosanjhMD Code: NCYHPZ ...Read more

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Why is my A1c high?

Why is my A1c high?

High A1C.: A high HgbA1C means your blood sugars are not under control in the long term if you have diabetes, or means you are at increased risk for developing diabetes if you don't have it currently. ...Read more

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What could make my A1C levels slightly high?

What could make my A1C levels slightly high?

High A1C.: A high HgbA1C means your blood sugars are not under control in the long term if you have diabetes, or means you are at increased risk for developing diabetes if you don't have it currently. ...Read more

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What can a diabetic with high A1c eat?

What can a diabetic with high A1c eat?

Anything : There's no food that's absolutely forbidden. But foods that are low in calories and high in fiber are better and can be eaten in larger volumes than foods that are high in carbs and calories. ...Read more

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What does a high A1c level mean if you don't have diabeties?

What does a high A1c level mean if you don't have diabeties?

High A1C.: A high HgbA1C means your blood sugars are not under control in the long term if you have diabetes, or means you are at increased risk for developing diabetes if you don't have it currently. ...Read more

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How can someone have a high A1C result and normal glucose reading?

The A1C measures: your glucose continuously over the past 3 months. So one glucose reading can be normal but you are spiking above normal at times if your AIC is high. Think of the A!C as an average glucose overr the last 3 months. If it is high,you are having some abnormal sugars. ...Read more

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Why is hemoglobin A1c high in addisons disease?

Why is hemoglobin A1c high in addisons disease?

Thanks for asking!: The risk of having type i diabetes increases in the presence of another autoimmune disease, such as addison's disease. ...Read more