Summary A short review in Thyroid Function Test


THYROID FUNCTION TEST In this test TRH is a
dose. Then blood is co
 Thyroid function is assessed by determining thyroid  Normal levels of TR
hormones level in blood.  Higher TRH level ind

Blood cholesterol:
 Normal blood choleste
 Its level is more in
cholesterol is less in h




Thyroid hormone profile:
 It is most common thyroid function test in our country.
 Thyroid hormones measured in blood are thyroid
stimulating hormone (TSH), thyroxine (T4) and
triiodotyronine (T3).
 Many methods are available to determine these hormones
in blood.
 Enzyme linked immuno absorbent assay (ELISA) and
radio immuno assay (RIA) methods are currently in use.




Hyperthyroidism: (patient is thin)
 T3 & T4 level is more in hyperthyroidism. But TSH level
decreases in hyperthyroidism.

 HYPERTHYROIDISM- Thyroid gland produces too much
hormones, resulting in a too active metabolism,
together with respiratory and cardiovascular rates that are
higher than necessary
 Common symptoms: Irritability, Insomnia, Weight
loss despite of good appetite, Heart racing, and
Diarrhea
 Causes: Grave's disease (auto immune disorder)
 Treatment: Antithyroid Medication

Hypothyroidism: (patient is fat)
 T3 & T4 levels diminishes in hypothyroidism. However
TSH level is raised in this condition. All three hormone
(including Calcitonin) levels diminishes in hypothyroidism
that occurs due to diseases of hypothalamus and
pituitary gland.