This test is used by the doctor to help how the thyroid gland is functioning. It aids in the diagnosis of thyroid disease and assesses how the thyroid treatment plan is progressing. In some cases, this test is used by the doctor to diagnose congenital hypothyroidism in newly born babies.
This test is ordered by the doctor when he or she feels that the patient has symptoms of thyroid disease. It may also be ordered when the patient has an enlarged thyroid – also known as goitre – or if the patient has a thyroid nodule – this is a small lump on the thyroid gland, which may a fluid-filled cyst or solid. In addition, the test is ordered as a follow up on an abnormal TSH test or when a patient is being treated for a thyroid disorder.
There is no special preparation needed for the test. However, it must be noted that some medications, supplements and multivitamins can adulterate the result of the test. Therefore, it is imperative to inform the doctor of any prescription or over the counter medication the patient is taking. Furthermore, if the patient is undergoing treatment for thyroid disease – such as taking thyroid hormone treatment – it is advised that the blood sample be drawn before taking the dosage of the treatment. In addition, if a patient is acutely ill, thyroid testing results may be affected. Thyroid testing should, therefore, be avoided in patients who have been hospitalised or simply deferred until after the patient has recovered from his or her affliction.
This test measures T4. T4 or thyroxine is one of the two primary hormones made by the thyroid gland. The other hormone is T3, also known as triiodothyronine. The thyroid gland is a small, butterfly-shaped organ that is found at the base of the throat. The gland lays flat across the windpipe. The two hormones work together to regulate the rate at which the body utilises energy. T4 is mostly found in the blood bound to protein. A small amount is unbound or free. This is the biologically active form of the hormone. The thyroid gland mostly makes T4. This hormone is relatively inactive and is converted in T3 – its active variant – in the liver and other tissues. The body regulates T4 levels using a feedback system. The feedback system helps in maintaining stable amounts of thyroid hormones in the blood. T3 and the thyroid-stimulating hormone work with the regulatory hormone thyrotropin-releasing hormone as part of the feedback system.
The system works in the following way: when the levels of thyroid decrease in the blood, the pituitary gland makes TSH in response to TRH stimulation. TSH, in turn, stimulates the thyroid by binding to the TSH receptor to produce and release T4 and T3. On the other hand, when thyroid hormone levels rise in the blood, the pituitary glands make less TSH, and the thyroid gland makes less T4 and T3. When the hypothalamus, thyroid, pituitary are working normally, then thyroid production is regulated in order to maintain stable levels of thyroid hormones in the blood. However, if the thyroid gland does not make an adequate amount of T4 and T3 due to thyroid dysfunction or insufficient TSH, then the patient exhibits symptoms of hypothyroidism. When the thyroid gland produces excessive T3 and T4, the patient experiences symptoms related to hyperthyroidism – Graves disease is the most common cause of hyperthyroidism.
Hyperthyroidism and hypothyroidism occur due to thyroid cancer, thyroiditis or the increase or decrease production of TSH. This test can be used by the doctor to monitor the effect of these conditions on thyroid hormone production.
Aid in the detection of too much or too little thyroid hormone (hyperthyroidism and hypothyroidism) and diagnose the cause
Help identify between different thyroid disorders
Help in evaluating the effectiveness of treatment in a person with a known thyroid disorder
Monitor individuals with thyroid cancer, in which the tumours respond to TSH. TSH and T4 levels will be regularly checked to make sure that enough thyroid hormone is being given to keep TSH low without making T4 too high.
Aid in the evaluation of the function of the pituitary gland (occasionally)
The test is ordered when the patient has symptoms of hyperthyroidism or hypothyroidism, goitre, thyroid nodule and abnormal TSH.
Symptoms of hyperthyroidism include:
Increased heart rate
Tremors in the hands
Light sensitivity, visual disturbances
There may be puffiness around the eyes with dryness, irritation, and, in some cases, bulging of the eyes.
Menstrual irregularity in women
Symptoms of hypothyroidism include:
Menstrual irregularity in women
This test may also be ordered alongside other thyroid tests if the patient is undergoing treatment for thyroid disease. If a pregnant woman has a thyroid disorder, the doctor may order testing early and late in the pregnancy and also after the delivery.
The results of the test are evaluated in conjunction with other thyroid testing results. In general, a high TSH with reflex indicates an overactive thyroid gland, and a low-test result indicates an underactive thyroid gland. The test results are not diagnostic, and the doctor needs to perform some additional tests to identify why a deficiency or excess may occur. Both increased and decreased test results are linked to a range of temporary and chronic thyroid conditions. Lower results for T4 alongside a low TSH test result or a high T4 and high TSH result indicate a disease related to the pituitary gland.
Generally we recommend all adults irrespective of their age to get Cura4U wellness check at least once. However for people above 40, or for people with family medical history, we recommend getting Cura4U health check up at least once a year.
Staying on top of your health by getting tested proactively can save extensive spending & pain in case of late detection of potential conditions. Moreover some individuals are more vulnerable to certain health conditions owing to their family medical history. Therefore, we advise everyone irrespective of their lifestyle to get checked up to be sure.
It will cost almost twice as much if you order tests and services included in Cura4U wellness check individually. The package is designed by America’s top specialists, and allows the addressing primary care physician to get the most accurate picture of an individual’s health as far as basic medical screening is concerned.
Cura4U Physician will discuss the results with you, and if required, recommend further diagnostic investigations or refer you to a specialist. If you prefer, Cura4U physician may order further diagnostics through Cura4U providing you up to 80% discount on services from top providers. If required, you can also request online consultation with a specialist from our rich multi-specialty consultant physician’s team which is much more economical than an in-office consultation, and is available within 24-48 hours.
This is a cash based service and is not covered by insurance at this moment.
Green Imaging, LLC
Green Imaging, LLC
Green Imaging is operated by a group of board-certified radiologists who owns and provides full service virtual imaging network. They help patients to make most informed decisions about imaging procedures like MRI, CTs and etc. Unlike other imaging facilities, the cash-pay price Green Imaging provide is the final price you pay. No extra radiologist fee charges
We choose Green Imaging as our partner as they believe that healthcare costs should be transparent aligns with our core value.
More than 900 centers coverage in almost 40 states
Board Certified Radiologists
High Quality Facilities
Wise use of resources
Low Administrative Costs
Low overhead and operating costs
Quality service with the aim to help patients to make most informed decision about imaging needs
Quest Diagnostics Incorporated
Quest Diagnostics empowers people to take action to improve health outcomes. Derived from the world's largest database of clinical lab results, our diagnostic insights reveal new avenues to identify and treat disease, inspire healthy behaviors and improve health care management. Quest annually serves one in three adult Americans and half the physicians and hospitals in the United States, and our 46,000 employees understand that, in the right hands and with the right context, our diagnostic insights can inspire actions that transform lives.
Quest Diagnostics offer broad access to clinical testing services through our national network of laboratories in most major metropolitan areas as well as approximately 2,000 patient locations.
Quest Diagnostics is driven to discover and deliver diagnostic insights and innovations that help to improve human health. We offer a wide range of products and services that benefit patients, healthcare providers, and pharmaceutical medical device companies, life insurance companies and employers.
We are the world’s leading provider of diagnostic testing, information and services that patients and doctors need to make better healthcare decisions. Our services range from routine blood tests — such as total cholesterol, Pap testing and white blood cell count — to complex, gene-based and molecular testing.
We perform medical tests that aid in the diagnosis or detection of diseases, measure the progress or recovery from a disease or confirm that an individual is free from disease. We have specialized expertise in cancer, cardiovascular diseases, infectious diseases, and neurology.
Precision Imaging provides state of the art imaging services in Jacksonville, Florida. Precision imaging is dedicated to provide highest quality services and it reflects in their standards which are benchmarked to nations leading imaging centers.
Precision imaging provides, MRI Scan, CAT scan, PET scan, 3 D Mammography, Digital Mammography, Digital X-Ray, Digital Ultrasound, Digital Densitometry & lung cancer screening program in Jacksonville at following locations.
7860 Gate Parkway, Suite 123
Jacksonville, FL 32256
JACKSONVILLE BEACH CENTER
14444 Beach Blvd, Suite 23
Jacksonville Beach, FL 32250
FLEMING ISLAND CENTER
1540 Business Center Drive B
Fleming Island, FL 32003
ST. AUGUSTINE CENTER
1000 Plantation Island Dr S, Suite 1
St. Augustine, FL 32080
Pulse Imaging was created by James Thomas, who is a registered cardiac sonographer as a mobile business allowing care to be provided to adult patients, veterans and elderly with limited mobility. Pulse imaging also provides cats and dogs scans.
Pulse imaging unique service point is that they offer echo along with doctor report reading as well as results send to ordering physician.
Please note that our services are not set up for emergency medical situations. If you are having any life threatening condition including but not limited to high grade fever, low or very high blood pressure, chest pain, shortness of breath, severe pain or stroke like symptoms etc, please call 911 or go to a nearby emergency center as soon as possible.
Please also note that physician-order service for diagnostics is not available for all the tests such as tests requiring IV contrast. Patients needing diagnostic study with IV contrast, must have a proper online visit with our physician first as well as need to have a lab test for their kidney function first.
Once you request the order service, you will receive an email inquiring about your medical history and you are required to fill in the form. Our affiliated physicians can only process orders after reviewing your medical history. Please note in some cases as determined by our medical team, you may be required to have additional information or an online visit first (for additional fee) before an order can be processed. Thanks