Does your temperature vary much between mouth ... - Thyroid UK

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Does your temperature vary much between mouth and armpit?

Justiina profile image
10 Replies

I just did some testing with two different thermometer as I have recently had very low reading thinking maybe the thermometer is broken.

Had A in mouth and B in the armpit. Mouth 0.1 C lower.  Waited a bit before swapping and got same result.  So both thermometers are working I guess and the reading is very consistent and not varying a lot for me. 

Did not drink or eat before testing.  I guess I can trust the temp taken from armpit in the future too as I hate taking it from mouth.  Just annoying. 

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Justiina profile image
Justiina
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10 Replies
humanbean profile image
humanbean

A variation in temperature between different parts of the body is normal :

en.wikipedia.org/wiki/Human...

Justiina profile image
Justiina in reply tohumanbean

I ofter see oral temp recommended and was wondering if for some it varies big time. 

I have always thought orally it's higher and correct , but that article says orally it's lower.  Me confused :(

humanbean profile image
humanbean in reply toJustiina

Me confused too. :D I've always used oral temperature, for no other reason than it was what my parents did,  I find it quickest and most convenient, and after all this time it has the added virtue of consistency.

phoenix23002 profile image
phoenix23002 in reply toJustiina

It wasn't until I had babies that I had to worry about armpit/rectal/oral modes of taking temps but I remember my family doctor telling me that rectal would be a degree higher than by mouth and armpit would be a degree less than by mouth.  I am sure this was probably just a 'rule of thumb' but it served me well. 

humanbean profile image
humanbean in reply tophoenix23002

Would that have been degrees Celsius or degrees Fahrenheit?

Fahrenheit I could believe, but not Celsius.

phoenix23002 profile image
phoenix23002 in reply tohumanbean

That would have been Fahrenheit, humanbean.

shaws profile image
shawsAdministrator

If you want to check for hypo this is how to do it:-

healthunlocked.com/thyroidu...

Justiina profile image
Justiina in reply toshaws

Thanks! Been taking my temp for years and been around 35.5 for long time,  was not sure if I did it wrong as some say to do it orally.  

Now I am going to actually record my temps with proper chart periods added as before periods my temps are slightly higher.

shaws profile image
shawsAdministrator in reply toJustiina

If we've been hypo for a long time temp may not come back to 'normal' but we feel warm instead of cold.

rsae56 profile image
rsae56

In my nurse training I learned that in the rectum the real temperature shows. Under the tounge the the temp is 0.2 degrees lower (Celcius) and in the armpit it is 0.5 degrees lower. 

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