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Old 04-13-2012, 02:06 PM   #1
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TSH w/reflex to FT4

I just got my lab results back and they say 0.33 L
What should I be following up with and what does it mean?

 
Old 04-13-2012, 03:55 PM   #2
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Re: TSH w/reflex to FT4

What's .33? TSH or FT4?
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Old 04-15-2012, 11:36 AM   #3
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Re: TSH w/reflex to FT4

Thyroid test and it means my thyroid is too low I guess.

 
Old 04-15-2012, 01:48 PM   #4
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Re: TSH w/reflex to FT4

TSH is one thyroid test.
FT4 is another thyroid test.
You indicate that "TSH w/reflex to FT4" was ordered. That means, if TSH was in normal range, they wouldn't run the FT4 test. But if your TSH was outside the normal range, they would run the FT4 test.
So, do you have two results to share, or only this one? If only one, it's likely TSH, which at .33 would be at the bottom most reference ranges. That wouldn't indicate "low thyroid" (unless the FT4 was low as well). Just the opposite; it would be on the borderline of 'high' thyroid.

Without much more information about exactly which tests were run, and whether you have any symptoms, we can't be of much more help than that.
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Old 04-15-2012, 03:01 PM   #5
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Re: TSH w/reflex to FT4

Thanks. On my test it gives "T4, free" as 1.1 and then "TSH w/reflex to FT4" as 0.33 L there is nothing that states just TSH.

 
Old 04-15-2012, 04:59 PM   #6
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Re: TSH w/reflex to FT4

That information helps a lot.

Your TSH (.33) is unusually low in relation to the FT4 of 1.1. It appears you may be hypothyroid ["low thyroid"], possibly due to a defect in the pituitary gland instead of to a faulty thyroid gland itself. It's an uncommon situation.

Do you have symptoms? Is your MD planning to treat it?
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Old 04-15-2012, 05:27 PM   #7
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Re: TSH w/reflex to FT4

I am always exhausted and don't think twice about sleeping 10 - 12 hours a night. Very dry skin and hair. My nails split far back on the sides no matter what I do for them. All my life I was considered underweight and now I weigh almost 300 lbs no matter what I eat and I am basically warm to hot all the time. I will make an appointment to see my Dr. this week but what should I be asking of him?

 
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