Re: Exactly how are normal ranges of testosterone determined by laboratories??

[Guest guest]

The only ranges that matter is what the tests indicate for their ranges,

comparing test ranges does not work because they measure things differently.

Along with that normal is a very loose term, what is normal for you might

not be normal for me. The ranges each list are just that, ranges, and thus

they include healthy and sick people in them.

In terms of the average value, I think most seem to feel good around the

upper 2/3rd of the range, so around 600 for Labcorp and around 750 for

Quest.

BR//Matt

On Wed, Jan 26, 2011 at 12:30 PM, cvictorg <cvgrashow@...> wrote:

>

>

> The normal range for total T in men is 241-827 ng/dl according to Labcorp

> and 260-1000 ng/dl according to Quest Laboratories.

>

> What is the methodology used to determine that these are the " normal range "

> for testosterone???

>

>

>

[Guest guest]

" Normal " is a statistical term meaning 95% of the population. You're supposed to

measure " healthy " people, plot their levels on a graph, and just chop off the

top and bottom 2.5% to get this normal curve. It should be symmetrical. I called

Quest Labs about the Free T3 (thyroid) curve, because I was having an argument

with someone about the ranges. Turns out that is not a normal curve, but

negatively skewed, meaning probably 80% of the values are to the right of the

midpoint. In any case, being " in-range " does not equate to good health.

Logically, if you look at the Quest ranges, does it make sense that someone can

have 4 times as much testosterone and still be as " normal " as the guy with 260?

Healthy is probably somewhere towards the middle, which would be 630. From

there you might extend out a couple hundred points, so 430-830 might be a better

range. I know DH has a major estrogen problem if his levels are in the 800s.

He does better in the 550-650 range.

Then there is the fact that some men are naturally higher testosterone than

others. A deep voice and naturally muscular build without working out are

signs, I think, of higher testosterone. So what's an optimal number for one may

be too much or too little for another.

JMHO,

Barb

>

> The normal range for total T in men is 241-827 ng/dl according to Labcorp and

260-1000 ng/dl according to Quest Laboratories.

>

> What is the methodology used to determine that these are the " normal range "

for testosterone???

>

[Guest guest]

This is what I don't understand. Let's say the doc prescribes me 100mgs of test

cyp per week. I go in for blood work 2 or 3 days after my last injection. My

levels come back as 1250 and I feel great. The doc will say my levels are to

high and reduce my dose to 50-75mgs per week to get my levels down to around 800

or so.

Suppose I feel like crap at 800 but great at 1200-1300??

What to do then??

> >

> > The normal range for total T in men is 241-827 ng/dl according to Labcorp

and 260-1000 ng/dl according to Quest Laboratories.

> >

> > What is the methodology used to determine that these are the " normal range "

for testosterone???

> >

>

[Guest guest]

Your doctor is probably bound by the Standard of Care to keep you within range.

Have your thyroid levels been checked, meaning a Free T3, and Free T4 and not

just a TSH? Many here compensate by taking more testosterone than needed

because thyroid is too low. Both apparently give you energy.

Going from 100/wk to 50/wk is a pretty drastic drop. I would try something like

70 mg/every 5 days. You won't get as high, but you also won't go as low. And

it'd probably keep you in range.

Barb

> > >

> > > The normal range for total T in men is 241-827 ng/dl according to Labcorp

and 260-1000 ng/dl according to Quest Laboratories.

> > >

> > > What is the methodology used to determine that these are the " normal

range " for testosterone???

> > >

> >

>

[Guest guest]

Can you provide info as to what the standard of care is with regard to HRT/TRT??

> > > >

> > > > The normal range for total T in men is 241-827 ng/dl according to

Labcorp and 260-1000 ng/dl according to Quest Laboratories.

> > > >

> > > > What is the methodology used to determine that these are the " normal

range " for testosterone???

> > > >

> > >

> >

>

[Guest guest]

Standard of Care is a legal term. If a doctor prescribes you 500 mg/week, your

labs show you outrageously over range and he doesn't reduce your dose, resulting

in gynecomastia and other health problems, then you have a right to sue him for

malpractice. Since no one wants to be sued, they will try to keep you in range.

You can google for more info. I'm neither a doc nor lawyer. I am just aware of

the terminology because thyroid patients have this problem with their TSH. Many

do not feel well unless their TSH is way below range on medication.

> > > > >

> > > > > The normal range for total T in men is 241-827 ng/dl according to

Labcorp and 260-1000 ng/dl according to Quest Laboratories.

> > > > >

> > > > > What is the methodology used to determine that these are the " normal

range " for testosterone???

> > > > >

> > > >

> > >

> >

>

[Guest guest]

First let me say the levels your seeing are for men not on TRT they sample a

huge amount of men both young and old sick and healthy and run the numbers and

get them ranges and Quest is 252 to 1100.

Here is a link to ranges by age.

http://www.mens-hormonal-health.com/normal-testosterone-levels-in-men.html

You will see that normal levels at about 500 are for men 75 to 84 yrs of age.

Once your on TRT your levels need to be adjusted by your labs and how you feel.

Being on TRT the Testosterone you put in your body is not the same as your body

making it. Every time you add it to your body your body attacks it and trys to

kill it.

Co-Moderator

Phil

> From: cvictorg <cvgrashow@...>

> Subject: Exactly how are normal ranges of testosterone

determined by laboratories??

>

> Date: Wednesday, January 26, 2011, 1:30 PM

> The normal range for total T in men

> is 241-827 ng/dl according to Labcorp and 260-1000 ng/dl

> according to Quest Laboratories.

>

> What is the methodology used to determine that these are

> the " normal range " for testosterone???

>

>

>

>

>

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