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Old 10-13-2004, 10:22 AM   #1
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Is fasting necessary for blood work?

Just caught another thread - made me wonder...is fasting necessary before blood tests. Wouldn't be a problem as I am rarely hungry. I am going tomorrow so thought I would ask. Never have fasted before.

 
Old 10-13-2004, 11:26 AM   #2
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Re: Is fasting necessary for blood work?

It is not necessary for the TSH, FT or antibody tests, Lilly - fasting is typically reserved for glucose, insulin and cholesterol tests which are often ordered along with a thyroid panel.
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Old 10-13-2004, 01:36 PM   #3
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Re: Is fasting necessary for blood work?

Thank you! Based on the other typical tests requiring it, I will probably save myself a trip if I fast!

Now, to clarigy - does fasting mean no water, no tea?

Thanks

 
Old 10-13-2004, 02:38 PM   #4
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Re: Is fasting necessary for blood work?

Water is allowed for every fasting test I have taken but no food, drink, tea nothing for 12 to 14 hours, particularly for cholsterol.

 
Old 10-13-2004, 06:53 PM   #5
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Re: Is fasting necessary for blood work?

It depends Lilly - if there is anything on there about serum or urine osmolality then there is no water (boy does this one suck big time!) It could be a test given if your doc is trying to screen out a kidney problem or the onset of diabetes. Your doctor should tell you this when you get the lab sheet, though - pretty sloppy of her/him not to.

Nat
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