Re: T3/rT3 ratio

[Guest guest]

Instructions on how to calculate the ratios, and how to adjust for different

units of measurement, are in our " Files " section, called:

Examples of How to Calculate RT3 Ratio.doc

and

Examples.txt

here's a link:

http://f1.grp.yahoofs.com/v1/4BBKTF3GSvwEeEJdzLFvSy0JAH3EooCllh43my8CRh9DjEB3I-S\

QpxSJirGemrxOE9qPgcY8sbf3ZQNk4T92HA/Examples.txt

T3-only treatment is recommended here to resolve RT3 issues. Moderator Nick's

website says:

" The main symptom of RT3 issues is that of hypothyroidism that won't respond to

treatment. "

from:

http://www.thyroid-rt3.com/whatare.htm

Don't miss the rest of Nick's excellent website for lots more RT3 info:

http://www.thyroid-rt3.com/

(FYI: This message may come through twice. I posted it last night but it

didn't show up, so am trying again.)

>

> My T3/rT3 ratio at 3.5 makes sense to me since the units ng/dL are the same.

My T3=70ng/dL and rT3=19ng/dL. I read somewhere that this ratio should be

greater than 10.

> I also read that fT3/rT3 ratio should be greater than 20 but this seems way

too large to me since the units are different. When I translate my fT3 of 1.8

pg/mL to .18 ng/dL so I have common units, I get a ratio of .18ng/dL / 19ng/dL =

..01. I suspect people kicking around this 20 rule of thumb are ignoring the

units.

> In any event I have been on Armour and using Thyro-Gold lately to titrate up

the dose so at least the T3's are midrange instead of being at the bottom. My

free T4=.89ng/dL with range.81-1.48ng/dL. Ferritin=73ng/mL. My 24hour urine

cortisol was slightly above normal.

>

> I am trying to decide whether to drop the Armour(actually EFRA)and go the T3

only route. Please give reasons if you think T3 only would be best. Thanks.

>

[Guest guest]

Oops, is that link I sent not working? Just go to our " files " section and click

on Examples.txt to get to the ratio calc instructions.

> >

> > My T3/rT3 ratio at 3.5 makes sense to me since the units ng/dL are the same.

My T3=70ng/dL and rT3=19ng/dL. I read somewhere that this ratio should be

greater than 10.

> > I also read that fT3/rT3 ratio should be greater than 20 but this seems way

too large to me since the units are different. When I translate my fT3 of 1.8

pg/mL to .18 ng/dL so I have common units, I get a ratio of .18ng/dL / 19ng/dL =

..01. I suspect people kicking around this 20 rule of thumb are ignoring the

units.

> > In any event I have been on Armour and using Thyro-Gold lately to titrate up

the dose so at least the T3's are midrange instead of being at the bottom. My

free T4=.89ng/dL with range.81-1.48ng/dL. Ferritin=73ng/mL. My 24hour urine

cortisol was slightly above normal.

> >

> > I am trying to decide whether to drop the Armour(actually EFRA)and go the T3

only route. Please give reasons if you think T3 only would be best. Thanks.

> >

>

[Guest guest]

>I am trying to decide whether to drop the Armour(actually EFRA)and go the T3

only route. Please give reasons if you think T3 only would be best. Thanks.

>

OK, units are a pain in the ass but if you ignore what the actual

units are and play with the decimal point to get an answer that runs

somewhere around 2 to 30 you get a ratio around 9.5 for yourself. This

should be 20 or greater.

Can you repost the RT3, FT3, and FT4 with the ranges please so I can

make sure where you are.

From the information in that post you are going to benefit from T3

only

Nick

--

for more information on RT3 and Thyroid Resistance go to

www.thyroid-rt3.com

For lots of good information of adrenal issues

http://www.nthadrenalsweb.com/

and the adrenal group on

http://health.groups.yahoo.com/group/NaturalThyroidHormonesADRENALS/