The Thyroid gland makes a hormone known as Thyroxine (T3,T4)
The Pituitary gland makes a hormone known as TSH..Thyroid
There is a certain balance That Thyroid hormone should stay
at in the body to keep your metabolism working well.
So, on the blood tests...there is a certain "Normal Reference range"
that the doctor compares your test result to. If it goes higher or
lower and is out of this normal range (of what most all healthy
patients would have)...then he knows there is a problem.
So, how does this work. When the Thyroid hormone starts to
go lower in your blood, the Pituitary Gland produces more of
the TSH to stimulate the Thyroid to make more. If the
Thyroid doesn't respond, then the pituitary gland keeps
increasing the TSH to try to force it to take place. The TSH
level goes higher than the normal range in the blood and the
doctor sees this. He also sees that the Thyroid hormone
may be low in the blood. So what can the doctor do, he gives the
patient medication to replace the hormone the thyroid is
not making. This helps keep the metabolism working well
in the body.
What organ does most of the metabolizing: The liver.
Considering you are low on these Vitamins and also have
thyroid problems...then your liver function tests may be
a reflection of this. But if your liver is enlarged in size
due to the liver cells becoming damaged and the immune
system of the body responding to this damage....then
it could be a liver/biliary problem. Therefore, the doctor
is doing the ultrasound to view this area and be sure.
When you say the Hepatitis panel...you may be saying
that they are checking you for a Virus, like Hepatitis A,B,C.
That means, since your test is normal for that...that a
virus has not entered the body and is not using the liver
cells to replicate itself.
The word Hepatitis (without a letter after it) means
inflammation of the liver. There are over 50 causes of
this taking place including the viral infection just mentioned.
Some of the causes can be alcohol consumption, certain
kinds of medication toxification, chemical exposure,
mushroom poisoning, viral or parasite infections,
auto immune disease, cardiac/vascular problems,
hereditary or metabolic disorders, fatty liver disease,
cyst/growth/tumor/cancer, and others.
You mention you don't smoke or drink, so some of
these above can be ruled out.
Usually, when someone is pregnant the ALP test
(alkaline phosphatase enzyme) would be higher in the
blood. However, you should let the doctor know this...because
it can affect what drugs and tests he may or may not do on
you. He may just check this out before proceeding with treatment.
No one here can be sure if that is what is causing your signs or
caregiver to a liver transplant patient