Sep 04, 2008 -
Overview
- Definition
- Alternative Names
- How the test is performed
- How to prepare for the test
- How the test will feel
- Why the test is performed
- Normal Values
- What abnormal results mean
- What the risks are
- Special considerations
- References
HEALTH GUIDE REFERENCE FROM A.D.A.M
Definition
Triiodothyronine (T3) is a hormone produced by the thyroid gland. It plays an important role in the body's control of metabolism.
A laboratory test can be done to measure the amount of T3 in your blood.
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Sep 04, 2008 -
Overview
- Definition
- Alternative Names
- How the test is performed
- How to prepare for the test
- How the test will feel
- Why the test is performed
- Normal Values
- What abnormal results mean
- What the risks are
- References
HEALTH GUIDE REFERENCE FROM A.D.A.M
Definition
The T3RU test measures the level of proteins that carry thyroid hormone in the blood.
Alternative Names
Resin T3 uptake; T3 resin uptake; Thyroid hormone-binding ratio
How the test is performed
Blood is typically drawn from a vein, usually from the inside of the elbow or the back of the hand. The site is cleaned with germ-killing medicine (antiseptic).
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Oct 08, 2008 -
In This Report
- Highlights
- Introduction
- Causes
- Symptoms
- Diagnosis
- Risk Factors
- Complications
- Treatment
- Resources
- References
HEALTH GUIDE REFERENCE FROM A.D.A.M
Highlights
Congenital Hypothyroidism and Maternal Hyperthyroidism
Thyroid-lowering medications used for treating Graves’ disease, the most common cause of hyperthyroidism (overactive thyroid), can cause babies to be born with hypothyroidism (underactive thyroid). Research presented at the 2006 annual meeting of the American Thyroid Association suggests that hyperthyroidism can be effectively managed during pregnancy without causing newborn hypothyroidism. The researchers suggest that:
- Pregnant women with Graves’ disease should take the lowest possible dose of their thyroid medication
- It is safe for women with Graves’ disease to maintain thyroid levels in the upper-normal range while pregnant
Low-Normal Thyroid and Metabolic Syndrome
- Thyroid levels in the low-normal range may increase the risk of unhealthy cholesterol levels, high blood sugar, and abdominal obesity -- indicators of metabolic syndrome -- according to a 2006 study in the Journal of Clinical Endocrinology and Metabolism.
- Metabolic syndrome is a cluster of conditions, (including abdominal obesity, high blood sugar, and unhealthy cholesterol levels), which increases the risk for heart disease.
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Oct 08, 2008 -
Overview
- Signs and Symptoms
- What Causes It?
- What to Expect at Your Provider's Office
- Treatment Options
- Following Up
- Special Considerations
- Supporting Research
HEALTH GUIDE REFERENCE FROM A.D.A.M
Thyroiditis is an inflammation of the thyroid gland. There are several types of thyroiditis. Most result in three phases: overactive thyroid (hyperthyroidism), underactive thyroid (hypothyroidism), and return to normal.
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Oct 08, 2008 -
Overview
- Signs and Symptoms
- What Causes It?
- What to Expect at Your Provider's Office
- Treatment Options
- Following Up
- Supporting Research
HEALTH GUIDE REFERENCE FROM A.D.A.M
Hypothyroidism occurs when your thyroid gland, at the front of your neck, doesn't produce enough thyroid hormone or when your body fails to use thyroid hormone efficiently. There are several types of hypothyroidism. The most common is Hashimoto's thyroiditis, an autoimmune disease in which the body attacks the thyroid gland.
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Oct 08, 2008 -
In This Report
- Highlights
- Introduction
- Causes
- Symptoms
- Risk Factors
- Lifestyle Changes
- Diagnostic Tests
- Staging Systems
- Surgical Procedures
- Radiation Treatments
- Treatment Options by Stages...
- Chemotherapy Treatments
- Investigative Agents
- Resources
- References
HEALTH GUIDE REFERENCE FROM A.D.A.M
Highlights
Research News:
- About 3,000 nonsmokers die each year of lung cancer resulting from exposure to secondhand smoke, according to a 2006 Surgeon General report.
- Advexin, a genetic therapy that contains the p53 tumor-suppressor gene, is showing promise. A 2006 study in Japan found that out of 13 patients with advanced NSCLC receiving Advexin, 10 had stabilized. Advexin is in Phase II clinical trials for NSCLC.
- Studies are finding that NSCLC tumors in people who never smoked have a much higher rate of epithelial growth-factor receptor (EGFR) mutations.
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Sep 03, 2008 -
Overview
- Definition
- Causes, incidence, and risk factors
- Symptoms
- Signs and tests
- Treatment
- Expectations (prognosis)
- Complications
- Calling your health care provider
- Prevention
- References
Illustrations
Primary and secondary hypothyroidism
Thyroid gland
HEALTH GUIDE REFERENCE FROM A.D.A.M
Definition
Primary hypothyroidism is a condition in which a defect in the thyroid gland leads to reduced production of thyroid hormone.
Causes, incidence, and risk factors
The thyroid gland is an important organ that regulates metabolism. It is located in the front of the neck just below the voice box (larynx).
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Sep 03, 2008 -
Overview
- Definition
- Alternative Names
- Causes, incidence, and risk factors
- Symptoms
- Signs and tests
- Treatment
- Expectations (prognosis)
- Complications
- Calling your health care provider
- Prevention
- References
Illustrations
Primary and secondary hypothyroidism
Thyroid gland
HEALTH GUIDE REFERENCE FROM A.D.A.M
Definition
Secondary hypothyroidism is a condition in which the activity of the thyroid gland is decreased, due to failure of the pituitary gland or hypothalamus.
Alternative Names
Central hypothyroidism
Causes, incidence, and risk factors
The thyroid gland is an important organ of the endocrine system. It is located in the front of the neck just below the voice box.
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Sep 03, 2008 -
Overview
- Definition
- Alternative Names
- Causes, incidence, and risk factors
- Symptoms
- Signs and tests
- Treatment
- Expectations (prognosis)
- Complications
- Calling your health care provider
- Prevention
- References
Illustrations
Endocrine glands
Hypothyroidism
Brain-thyroid link
Thyroid gland
HEALTH GUIDE REFERENCE FROM A.D.A.M
Definition
Hypothyroidism is a condition in which the thyroid gland fails to produce enough thyroid hormone.
Alternative Names
Myxedema; Adult hypothyroidism
Causes, incidence, and risk factors
The thyroid gland, located in the front of the neck just below the larynx, secretes hormones that control metabolism. These hormones are thyroxine (T4) and triiodothyronine (T3).
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Jul 08, 2008 -
If you're looking to dip into the Fountain of Youth, cutting some calories daily just might help. Calorie restriction has long been proven to slow down the aging process in mice and rats, and researchers at Saint Louis University decided to test this theory on a human population.
In a year-long study, subjects who eliminated 300 to 500 calories from their diet a day showed a decrease in the thyroid hormone triiodothyronine (T3).
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