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Old 03-24-2010, 06:50 PM   #1
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Eating before blood test

My father has just been diagnosed with high blood sugar. He has an appointment Friday afternoon at 2 and wants to have the doctor check his blood. If he eats a boiled egg at 8, would the reading be the same as if he fasted all night, or should he not eat at all until the appointment.
Thanks.

 
Old 03-24-2010, 06:59 PM   #2
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Re: Eating before blood test

i have limited experience since i'm new to all of this too but i don't think an extended fast like that would not be a good idea. fasting blood sugar is usually around 12 hours and taken in the morning. i did a 21hr fast and i was warned that my blood sugar could go higher because the body is compensating from going so long without food. if i have an afternoon appt and need fasting numbers i usually have to go to a lab in the morning and the dr will write out a lab sheet for it and have it drawn and then sent over. i would call your dr office and see what they want him to do before his appt. If they check his A1C's then no need to fast.

good luck

 
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Old 03-24-2010, 07:14 PM   #3
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Re: Eating before blood test

The problem is if he doesn't eat in the morning it will be about 18 hours since he would eat. He is 89 and doesn't drive, so it wouldn't be so easy to go in the morning. I take him and live over 2 hours away and about 2 is the only time I can go get and take him.

 
Old 03-24-2010, 07:39 PM   #4
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Re: Eating before blood test

There is a test called an HbA1c, or glyco-hemoglobin or A1c for short, that measures the the average blood sugar over the past 8-12 weeks. It does not require fasting. Recently a symposium of endocrinologists has recommended that this test be used for diagnosing diabetes. I would call his doctor tomorrow and ask if they can do that.

At his age, I would definitely NOT have him fast, especially not for that length of time. If they can do the A1c, he would be able to eat anything he wanted to the day of the test.

If they insist on doing a fasting blood glucose test, then they should make an appointment for earlier in the day, even if they can't fit him in for a few weeks.

Ruth

 
Old 03-24-2010, 11:07 PM   #5
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Re: Eating before blood test

Quote:
Originally Posted by Frances1952 View Post
The problem is if he doesn't eat in the morning it will be about 18 hours since he would eat. He is 89 and doesn't drive, so it wouldn't be so easy to go in the morning. I take him and live over 2 hours away and about 2 is the only time I can go get and take him.
Could he get to the doctor's office by walking, public transportation, senior shuttle service if available in his area, or even by taxi? If so, that may allow for a morning appointment if a 12 hour fasting measurement is needed.

 
Old 03-25-2010, 03:01 PM   #6
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Re: Eating before blood test

Spend the night with him then take him next morning.

 
Old 03-25-2010, 04:15 PM   #7
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Re: Eating before blood test

Quote:
Originally Posted by Misty800 View Post
Spend the night with him then take him next morning.
Would love to, but have school age children.

 
Old 04-04-2010, 04:51 PM   #8
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Re: Eating before blood test

Whatever you plan to do, 6 hours is not long enough of a fast to get accurate fasting readings. Call your doctor and ask him how many hours need to pass. It's usually around 10 hours, which is nearly twice the time.

 
Old 04-05-2010, 01:11 PM   #9
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Re: Eating before blood test

Quote:
Originally Posted by savvysearch View Post
Whatever you plan to do, 6 hours is not long enough of a fast to get accurate fasting readings. Call your doctor and ask him how many hours need to pass. It's usually around 10 hours, which is nearly twice the time.
What he ended up doing is eating a late night snack. That way he would not have gone almost 24 hours not eating, thanks

 
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