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Help interpreting lab results

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Old 08-15-2008, 01:14 PM   #1
m. m.
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Join Date: Jan 2007
Location: midwest
Posts: 123
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Help interpreting lab results

I was just curious if anyone has any thoughts on the pattern of my bloodwork. I started Armour thryoid and have been on the same dose for about 7 months now. My doctor tends to measure Total T4, Total T3, FT4 and FT3. I'm puzzled by the results but not sure if I should be. I still feel hypothyroid. I know my FT's could be higher which would likely help but is there anything in these lab results that give more insight into "what" is going on with my thryoid (antibodies negative).

Here's basically where I was before/after treatment:

T4: 18% in range / 33% in range
FT4: 20% in range / 40% in range
T3: 30% in range / 55% in range
FT3: 50% in range / 55% in range

I have seen every measurement effectively double except FT3 which has barely increased. My body has twice as much T3, T4 and FT4 so it seems my FT3 should be higher. Is this a t4/t3 conversion issue? Is my T3 being hijacked by something preventing my FT3 from increasing? Seems simply because I'm on Armour my FT3 should be higher.

I know everyone says Total T's don't matter but if you think of them as being "raw" material for Free T levels then seems they can be helpful in diagnosing certain thryoid patterns - just not for measuring effectiveness of medication dosage.

Anyone have any thoughts? Thanks.

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