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Clarification on microsomal test results - Online Doctor Chats

Date : 21-Feb-2012
User rating for this question
Very Good Posted in: X-ray, Lab tests and Scans
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General & Family Physician
Practicing since : 2004
Answered : 1722 Questions
User :   I just had a microsomalAB test done. I keep reading that a "negative" result is good but what IS negative? My result was 0.4 but my other thyroid tests were in normal range...?
Doctor :   HI
Doctor :   I am Dr. xxx
User :   hello
User :   what is your specialty?
User :   are you there?
Doctor :   I am a General physician
User :   ok
Doctor :   I am trying to understand if you have any autoimmune problems that lead to the test
Doctor :   What is your age?
User :   I am 48 years old and in menopause...I had a hysterectomy in 2005 but kept ovaries...hormones have bottomed out...dr. checking thyroid
Doctor :   Ok
Doctor :   This is a test to check for Autoimmune thyroiditis
Doctor :   called Hashimoto's
Doctor :   I think your doctor would have mentioned that
Doctor :   Usually starts in childhood, very rare at this age
Doctor :   ofcourse common in women
Doctor :   But usually people who tend to have other autoimmune diseases are screened
Doctor :   liek DiabetesType 1
Doctor :   Coeliac disease
User :   yes....because I am having very bad hot flashes and sensitiivty to heat....I am hot allof the time on top of the flashes! plus can't sleep at night
Doctor :   or any one in the family
Doctor :   Perimenopausal age, these are commonly seen
Doctor :   in women
User :   no one else has thyroid issue...she did mention Hashimotos
User :   but wouldn't I have other symptoms?
Doctor :   Ok since I believe you have normal TSH and T4, T3 levels
User :   yes, I got those results back
Doctor :   I do not think you should be worried about Hypothyroidism resulting from Hashimotos
User :   even though my reading was 0.4 on the microsomal test, that is not a negative test, right?
User :   because it didn't say "negative" and there was a reading or number, I guess?
Doctor :   Ok
Doctor :   The numbers vary based on the local lab
Doctor :   What is your doctor's opinion on this
Doctor :   Which place are you in ?
User :   I am in yyy, went to the zzz Clinic...I viewed these results on MyChart, an online service from the Clinic to see your results, so haven;t talked to Dr. yet.
Doctor :   Ok, I am not sure about the lab values in your area
Doctor :   Actually in this part, they say negative and also quote number
Doctor :   Sometimes the numbers are not significant
User :   aren't the ranges universal in most basic lab tests?
Doctor :   as this part the Hashimotos
Doctor :   is not prevalant
Doctor :   and Iodine deficiency is more common than Hashimotos
Doctor :   So we treat our patients in line with that
Doctor :   rather than Hashimoto's
Doctor :   No
Doctor :   The range is not universal
User :   that's interesting...would I have goiter if I had an iodine insufficiency?
Doctor :   Yes
Doctor :   But importantly you have recognise that your thyroid results are normal
User :   I don't have that, she checked
Doctor :   so I would safely rule out thyroid problem
User :   yes, the rest were within normal limits
User :   I think eveything would be abnormal if I had a thyroid issue?
Doctor :   Ofcourse if the treating doctor suspects he may go in for further testing
Doctor :   Say a repeat thyroid profile after sometime
User :   that may be the course....perhaps an endocrinologist would be the way to go??
Doctor :   It is routine to evaluate thyroid profile in perimenopausal women like you
User :   I understand that....makes sense!
Doctor :   If you want you can take an online opinion from Endocrinologist here
User :   Thank you, you have shed some light on this for I can get some rest!
Doctor :   putting all your concern
Doctor :   WWW.WWWW.WW [push]
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