Variability of cholesterol reading?

medquest said:

Hi, I happened to go to an all-u-can-eat Chinese buffet,
an hour before getting a blood test. (I don't eat food
like that often.) I got a cholesterol reading of 235. How
much does blood cholesterol vary after meals?

It can vary a great deal from individual to individual and
depending on the quantity and quality of food eaten.

Servant to the humblest person in the universe,

Andrew

--
Dr. Andrew B. Chung, MD/PhD
Board-Certified Cardiologist
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x-no-archive: yes

Quoted message said:

Hi, I happened to go to an all-u-can-eat Chinese buffet, an
hour before getting a blood test. (I don't eat food like
that often.) I got a cholesterol reading of 235. How much
does blood cholesterol vary after meals?

I don't know the %, but the only reliable number without a
12-14 hour fast is the HDL.

Susan

Let us just think a tiny bit about this question. The guy
eats and one hour later gives a blood sample for a
cholesterol test. The majority of the cholesterol in anyones
blood is made by his own body. It is not simply cholesterol
absorbed from the food he eats. So there is no reason at all
that eating a big meal and having a blood draw an hour later
would impact either LDL or HDL levels one iota.

How about triglycerides? The medical people keep calling
triglycerides cholesterol even thou triglycerides are not in
the slightest chemically related to cholesterol other then
both are made from carbon, hydrogen and oxygen. Nor are
triglycerides the chemical precursors that your body uses to
sythesize cholesterol. Never the less the medical people
call triglycerides cholesterol and have a conversion factor
that they use. So could food eaten an hour before a blood
draw impact triglyceride levels? Particularly Chinese food
which is not usually particularly fatty? I think it is very
unlikely that the increase would be statistically
significant. Particularly in light of the wide scatter
expected in cholesterol determinations.

I have a paper someplace I am not going to bother to dig
out. The subject of the paper was the noise level in
cholesterol analyses when duplicate samples were analyzed at
teaching hospital labs. One should expect such labs to be
some of the better labs in terms of doing the analyses more
or less correctly. The paper presented results which said
that the two standard deviation noise level was +/- 14.7%
relative. In other words if your total cholesterol came out
200 and you wanted to be 95% confident of the range the true
number was in that range would be 170 to 230. With this kind
of noise level seeing a small change due to eating a meal is
out of the question.

I know this is a long answer and much to complicated for
chungy child to possibly understand. His simple one liner
answer sure looks like incompetent garbage advice once again
unless he can provide a peer reviewed publication to back up
his statement.

"medquest" <[email hidden]> wrote in message
news:<[email hidden]>...

Quoted message said:

Hi, I happened to go to an all-u-can-eat Chinese buffet,
an hour before getting a blood test. (I don't eat food
like that often.) I got a cholesterol reading of 235. How
much does blood cholesterol vary after meals?

Quoted message said:

"medquest" <[email hidden]> wrote in message news:<[email hidden]>...

Quoted message said:

Hi, I happened to go to an all-u-can-eat Chinese buffet,
an hour before getting a blood test. (I don't eat food
like that often.) I got a cholesterol reading of 235.
How much does blood cholesterol vary after meals?

James said:

Let us just think a tiny bit about this question. The guy
eats and one hour later gives a blood sample for a
cholesterol test. The majority of the cholesterol in
anyones blood is made by his own body. It is not simply
cholesterol absorbed from the food he eats. So there is no
reason at all that eating a big meal and having a blood
draw an hour later would impact either LDL or HDL levels
one iota.

How about triglycerides? The medical people keep calling
triglycerides cholesterol even thou triglycerides are not
in the slightest chemically related to cholesterol other
then both are made from carbon, hydrogen and oxygen. Nor
are triglycerides the chemical precursors that your body
uses to sythesize cholesterol. Never the less the medical
people call triglycerides cholesterol and have a
conversion factor that they use. So could food eaten an
hour before a blood draw impact triglyceride levels?
Particularly Chinese food which is not usually
particularly fatty? I think it is very unlikely that the
increase would be statistically significant. Particularly
in light of the wide scatter expected in cholesterol
determinations.

I have a paper someplace I am not going to bother to dig
out. The subject of the paper was the noise level in
cholesterol analyses when duplicate samples were analyzed
at teaching hospital labs. One should expect such labs to
be some of the better labs in terms of doing the analyses
more or less correctly. The paper presented results which
said that the two standard deviation noise level was +/-
14.7% relative. In other words if your total cholesterol
came out 200 and you wanted to be 95% confident of the
range the true number was in that range would be 170 to
230. With this kind of noise level seeing a small change
due to eating a meal is out of the question.

I know this is a long answer and much to complicated for
chungy child to possibly understand. His simple one liner
answer sure looks like incompetent garbage advice once
again unless he can provide a peer reviewed publication to
back up his statement.

Perhaps the original poster can comment on the usefulness of
your response. If s/he requires more information from me,
let him/her ask for it.

Servant to the humblest person in the universe,

Andrew

--
Dr. Andrew B. Chung, MD/PhD
Board-Certified Cardiologist
heartmdphd.comheartmdphd.comOpen ↗

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Who is the humblest person in the universe?
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What is all this about?
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Quoted message said:

I know this is a long answer and much to complicated for
chungy child to possibly understand. His simple one liner
answer sure looks like incompetent garbage advice once
again unless he can provide a peer reviewed publication to
back up his statement.

blah blha bhla spite is nice and idiots make the
loudest noises.

liaM said:

Quoted message said:

I know this is a long answer and much to complicated for
chungy child to possibly understand. His simple one
liner answer sure looks like incompetent garbage advice
once again unless he can provide a peer reviewed
publication to back up his statement.

blah blha bhla spite is nice and idiots make the
loudest noises.

Reminds me of "raging and self-confident" Pastorio.

He remains in my prayers to God in Christ's name.

Servant to the humblest person in the universe,

Andrew

--
Dr. Andrew B. Chung, MD/PhD
Board-Certified Cardiologist
heartmdphd.comheartmdphd.comOpen ↗

**
Who is the humblest person in the universe?
makeashorterlink.commakeashorterlink.comOpen ↗

What is all this about?
makeashorterlink.commakeashorterlink.comOpen ↗

Is this spam?
makeashorterlink.commakeashorterlink.comOpen ↗

Dear little chungy;

First of all medquest asked a perfectly reasonable question.
Then you gave an answer that is the opposite of the answer
you gave to the same question a year or two ago. So, if
there is new information why not post it?

The truth is you continue to shoot from the hip without
thinking. And it is getting worse all the time. Two weeks
ago you tell an elderly lady her problem is she is
overweight without even knowing her weight! Then you tell
her to see a cardiologist when her problem is very unlikely
to even be a circulatory problem. To make matters worse she
lives in a country with rationed medical care. It will take
her three months to get to a doctor. When you are 90
something three months is way too long to wait to simply
find out you are at the wrong doctor. It is bad enough in
the US where it can easily take six weeks to see a
specialist the first time unless you are on deaths doorstep.

The only good thing I can say about you is you are not
praying to your false deity for my soul. You are a liar. You
are not very smart. You are not thoughtful. You spout facts
that are made of thin air. I thought you took the hypocratic
oath? Then why do you not try to help people rather then
passing out nonsense?

The answer to the above is straightforward. You need serious
psychiatric help and fast. I have seen lots of sad people
who were mentally ill. I suggest you find help before you
seriously harm someone. Posting under all those false names
is not helping you. It is a real shame that the medical
community is so poor at self policing. Most of science works
far better.

"Dr. Andrew B. Chung, MD/PhD" <[email hidden]> wrote
in message news:<[email hidden]>...

Quoted message said:

Quoted message said:

"medquest" <[email hidden]> wrote in message
news:<[email hidden]>...

Quoted message said:

Hi, I happened to go to an all-u-can-eat Chinese
buffet, an hour before getting a blood test. (I don't
eat food like that often.) I got a cholesterol reading
of 235. How much does blood cholesterol vary after
meals?

James said:

Let us just think a tiny bit about this question. > >

Perhaps the original poster can comment on the usefulness
of your response. If s/he requires more information from
me, let him/her ask for it.

Servant to the humblest person in the universe,

Andrew