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Old 09-15-2010, 06:05 AM   #1
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TSH blood test- when can I get it after I took medication?

I took my Synthroid this morning at 6:45. I need to get a blood test today, or do I have to wait till tomorrow now?

Also, does anyone know if Synthroid is gluten free? If not, I will ask my endo when I talk to her in a few days.

Thanks!

 
Old 09-15-2010, 08:16 AM   #2
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Re: TSH blood test- when can I get it after I took medication?

If your free T4 is going to be tested, wait at least 4-6 hours before having blood drawn. If only your TSH will be tested, it doesn't matter.

The list of inert ingredients for all strengths of Synthroid includes -- acacia, confectioner's sugar (contains corn starch), lactose monohydrate, magnesium stearate, povidone, and talc. Then there are various dyes used to color the different strengths.
I'm guessing that cornstarch might be a problem?

Last edited by midwest1; 09-15-2010 at 08:18 AM.

 
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Old 09-15-2010, 08:22 AM   #3
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Re: TSH blood test- when can I get it after I took medication?

Quote:
Originally Posted by midwest1 View Post
If your free T4 is going to be tested, wait at least 4-6 hours before having blood drawn. If only your TSH will be tested, it doesn't matter.

The list of inert ingredients for all strengths of Synthroid includes -- acacia, confectioner's sugar (contains corn starch), lactose monohydrate, magnesium stearate, povidone, and talc. Then there are various dyes used to color the different strengths.
I'm guessing that cornstarch might be a problem?
Thanks! I will have to ask my Dr about the corn starch, I was just dx'd with celiac so I have no idea about certain ingredients, but I heard it can hide in certain things- like dyes too.

 
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