home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!stanford.edu!unix!hsdndev!dartvax!Simon.N.McRae
- From: Simon.N.McRae@dartmouth.edu (Simon N McRae)
- Newsgroups: sci.med
- Subject: Re: Thyroid info needed
- Message-ID: <C18DEt.DII@dartvax.dartmouth.edu>
- Date: 22 Jan 93 00:59:15 GMT
- References: <1993Jan14.173149.20985@news.weeg.uiowa.edu>
- Sender: news@dartvax.dartmouth.edu (The News Manager)
- Organization: Dartmouth College, Hanover, NH
- Lines: 39
- X-Posted-From: InterNews1.0b3@newshost.dartmouth.edu
-
- In article <1993Jan14.173149.20985@news.weeg.uiowa.edu>
- broy@vaxa.weeg.uiowa.edu (Barbara Roy) writes:
-
- > I have been experiencing extreme fatigue, irritability, weight gain, and
- > depression for many months now and finally decided to get a complete
- > physical. My sister is a nurse practitioner in California and told me that
- > these symptoms often indicate a low thyroid condition. My thyroid T4
- > reading was 7.2 which my doctor insists is well within the "normal range",
- > but according to my sister this reading should be closer to 10 and that
- > I am really "borderline normal" and might benefit from thyroxin treatment.
- > My doctor does not concur. I am looking for personal experiences, articles,
- > or physicians who have researched this area who can either support or
- > refute the need for thyroid medication with a 7.2 T4 score. My doctor is
- > suggesting anti-depressants which I am loath to try if a less drastic
- > medication could possibly help me.
-
- When you say "thyroid T4 reading", it's not clear whether you mean
- "total T4" or "free T4 index." The former measures total T4, the
- latter measures amount of T4 that is available for use (loosely
- speaking). You could very well be normal in total T4, and depressed in
- the more physiologically significant free T4 index.
-
- Let's assume that the value you gave was for total T4. Get your free
- T4 index checked, and if it is low, in light of your normal TSH level,
- ask your doctor about the possibility of TSH or TRH deficiency. This
- is because, if your free T4 really is low, your TSH should be much
- elevated.
-
- FYI, the suggested approach to the patient with suspected
- hypothyroidism includes the following:
- 1. serum T4 level.
- 2. free T4 index.
- 3. TSH level.
- The results of these three tests, along with the patient history of
- course, are usually sufficient to get a good idea of the diagnosis.
-
- It appears you may be missing one important piece of information.
-
- Simon.
-