Interpreting lab results

Posted , 5 users are following.

I have congetial hypothyroidism and am currently taking Tirosint.  Recently had blood work done and I'm curious what your thoughts are about these results.  TSH is within normal range but T4 is elevated (2.33).  What does this mean in laymans terms?

Thanks in advance

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9 Replies

  • Posted

    I should edit this to say "Free T4" is elevated
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  • Posted

    Hi, do you know what the ranges are for both results? It gives a clearer picture. If T4 is elavated it usually means you are taking too much. It is possible for TSH to be within normal range and still be on too much (it just may be the lower side of normal). What did your GP say? I've not heard of tirosint before is that a synthetic T4 medication?
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    • Posted

      Thanks for your response. 

      TSH = 1.19 (range 0.45-4.5)

      Free T4 = 2.33 (range .82-1.77).

      My endocrinologist is not concerned, however, I like to know what this means and the office is closed.

      Tirosint is synthetic but it has very few ingredients.  I avoid gluten, dairy, dyes, etc, so I requested this medication. Its relatively new and doesn't have great insurance coverage but for me its worth it.

      From their website: "Tirosint is different from other thyroid medications because it contains only 4 ingredients: Levothyroxine, Gelatin, Glycerin, and Water. It does not contain sugars, dyes, alcohol, wheat starch (gluten), lactose or many of the other additives used to make some thyroid medications. Tirosint is a gelcap, not a tablet like most medications used to treat hypothyroidism."

      **they have coupons on their website!

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    • Posted

      That's interesting - I'm in the UK so we just get given the bog-standard levothyroxine.

      If you aren't suffering any symptoms then I wouldn't worry about it. Your t4 is a little higher than normal so if you are getting symptoms such as fast heart rate/sweating/trouble sleeping then maybe you could request a small drop in meds, but sounds fairly normal to me. Out of curiosity what dose are you on?

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  • Posted

    Hello MaSmith

    My name is Shelly and I am a nurse in the USA.  I have Hashimoto's thyroid disease since 1987. T4 elevated means too much thyroxine  name for T4 is in you.  It should be between 4.5 and 11.2.   Which test did you have?

    What med are you on?

    FreeT4 (FT4) is another test and should be between  0.82-1.77 in that range.

    I hope this helps, and any questions just ask.


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  • Posted

    Hi, it's worth getting T4 tested too. How are your vitamin and mineral levels? Ferritin level needs to be 70+ to process thyroxine properly. Ask if you can have your iron levels checked. Also Ferritin, vitamin B12, vitamin D, calcium, potassium, magnesium, sodium checked and if possible: , selenium too. If you feel ok and your doctor isn't worried that's ok. Keep an eye out for symptoms of overactive or underactive thyroid in case these manifest and see your doctor if they do.
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