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You will get a call within 12 Hrs from the time of Booking. *T&C – Free home sample collection is not available on specific tests. Pediatric home sample collection ( kids below 10 years age ) is available at specific cities only

How Often Should You Get a Thyroid Blood Test?

The thyroid gland produces two important hormones, T3 (triiodothyronine) and T4 (thyroxine), which are concerned with metabolism. Malfunctioning of the thyroid gland manifests either in the form of overproduction or underproduction of hormones. When the hormone levels are above normal, the condition is known as hyperthyroidism and when they are abnormally low, it is called hypothyroidism.


Hypothyroidism usually affects middle-aged and older people. It shows up in the following symptoms, depending on how severe the deficiency is: fatigue and weakness, weight gain, cold intolerance, memory loss, dry skin, constipation, depression, muscle aches and joint pain, swelling, or stiffness, thinning hair and brittle nails, increase in blood cholesterol levels

In infants, the symptoms (which may be few in number) include yellowing of the skin and eyes, frequent choking, a protruding tongue, and a puffy face. They also have constipation, sleepiness, and muscle tone problems.

Children and teenagers experience stunted growth, delayed development of permanent teeth, delayed puberty and poor mental development.


This disorder may be caused by an overactive thyroid. The most common cause of hyperthyroidism is an autoimmune disorder called Graves’ disease. Symptoms include high metabolic rate which leads to a high heart rate, high blood pressure and hand tremors. Other symptoms are frequent bowel movement, swollen thyroid gland, exophthalmos (prominent eyes), weight loss, irregular menstrual cycle, increased appetite, nervousness and restlessness, nausea, lack of concentration, hair fall, and difficulty sleeping.

Why is it important to get tested?

If left untreated, hypothyroidism can lead to further complications such as Goitre, Heart problems, mental health issues, peripheral neuropathy, myxedema, infertility and birth defects. Only through tests can the disorder be spotted early enough to avoid complications and to detect possible causes that can be serious.

Early diagnosis of hyperthyroidism and treatment help to avoid complications due to a condition like Graves’ disease which gets worse over time and becomes life-threatening. Hyperthyroidism can also lead to atrial fibrillation (a common but dangerous type of heart arrhythmia or irregular heartbeat that interrupts flow of blood and may lead to strokes) and congestive heart failure.

How is testing done?

A series of blood tests called thyroid function tests is done to measure T3, T4, and TSH (thyroid stimulating hormone secreted by the pituitary gland) and T3RU (resin T3 uptake). The tests for T4 and TSH are usually taken together and are the most common.

The thyroxine (T4) test reveals hyperthyroidism if T4 levels are high. It measures the amount of free T4 (which is not bound to protein) in the blood. The normal range is from 9.0 to 25.0 pmol/l (picomoles/litre).

The thyroid stimulating hormone (TSH) level test shows hyperthyroidism if the reading is abnormally low. Moderately low levels indicate normal thyroid hormone levels. The normal range is from 0.4 to 4.0 mIU/l (milli-international units of hormone/litre of blood). If the reading is above 2.0 mIU/l, there is a risk of hypothyroidism.

If these two tests point towards hyperthyroidism, the T3 test is taken. The normal range is 100 to 200 ng/dl. Any reading above this is considered abnormally high and is most likely an indication of Graves’ disease.

Cholesterol and triglyceride levels are also tested to indicate elevation in the metabolic rate.

If the blood tests show a functional imbalance in the thyroid gland, an ultrasound test is recommended to check for structural problems with the gland, gland activity, and tumours.

These conditions are treated with the help of medication that either stop or stimulate the thyroid gland’s activities. Surgery and radioactive iodine also serve as treatment for hyperthyroidism. A proper diet can prevent these disorders.

A TSH test is done once a year in case of hypothyroidism to check if the levels are within the normal range. The frequency of hyperthyroidism tests (usually TSH and T4) depends on the treatment. In any case, blood test are taken every few weeks in the beginning, and as the treatment stabilises, the frequency is reduced.

All these tests, are available at Apollo Diagnostics. Find your nearest Apollo Diagnostics centre here.

Book Your Test

* T & C

You will get a call within 12 Hrs from the time of Booking. *T&C – Free home sample collection is not available on specific tests. Pediatric home sample collection ( kids below 10 years age ) is available at specific cities only

Patient Testimonials

“Finding the best place for a diagnostic test is as important as consulting the best doctor. The Apollo name was what guided me to Apollo Diagnostics and I am indeed glad that I came here. From attending us on time to sample collection, everything flowed so smoothly. I was particularly impressed by the hygiene. It was definitely a value for money experience. Thanks a lot Apollo Diagnostics…keep up the good work!”

Mrs. Ferha Jabeen, Old Bowenpally, Secunderabad

“I Have heard a lot of good things about Apollo Diagnostics from our family physician as well as from relatives and friends. So then next time I needed a diagnostic centre, I visited Apollo Diagnostics and I was really glad I did. For one, I didn’t have to wait. The technician was extremely good, and the place was really clean. It was certainly a value for money experience. Great job Apollo Diagnostics!”

Ms. T. Jaya, Nakkalagutta, Hanmakonda

“I must say Apollo Diagnostics places a great value on time and patient comfort! I am a fan of their home collection service which is not only on time and technically sound, but the hygiene and cordiality of the visiting technician is also commendable. Hats off! I’ll continue to recommend Apollo Diagnostics to my family and friends.”

Mr. B. Pochaiah, Mallikarjuna Nagar Colony, Old Bowenpally, Secunderabad

“I have always had a great experience with Apollo Diagnostics. The calls are unfailingly answered. The scheduled appointment is kept to the minute. The phlebotomist is well-trained in both technique and putting the patient at ease. Apollo Diagnostics undoubtedly delivers value for money. They will always be my top option for all the diagnostic needs of my family.”

Mr. Prasanta Kumar Jena, JP Nagar, Bengaluru

“I came to know about Apollo Diagnostics from my relatives and friends. So, when I required a check up to be done, I thought about trying their service once. From sticking to the appointed time to accuracy of technique, it was really a great experience overall. Hygiene of the technician and the centre as well, was also quite admirable. I certainly felt it delivers value for money service. From now on, I’ll always visit Apollo Diagnostics for all my checkups.”

Mr. Venkateshwar Rao, Hanmakonda

“I was looking for a good diagnostic centre to get some checkups done. I was confused as there are so many of them all over the city. Some of my friends recommended Apollo Diagnostics as the best one. I’ll always remain thankful to them. The technician at Apollo Diagnostics was not only punctual but his competency was certainly praiseworthy. I never felt any discomfort as he was so confident and compassionate. Great job Apollo Diagnostics!”

Mr. T Radhakishan Rao, Hanmakonda

“My experience with Apollo Diagnostics has been consistently good. Securing the appointment was very easy and the schedule was maintained to the dot. The behaviour of the technician was pleasant and he was well–versed with his job. The place was noticeably clean and I did not face any discomfort during the process. The reports were delivered as promised and surprisingly, the service was pretty affordable. I would recommend Apollo Diagnostics to my circle without any hesitation!”

Mr. Arif Ameer, JP Nagar, Bengaluru

“Apollo Diagnostics came highly recommended by my friends. I was particularly impressed by their cordiality, time management and process competence. Another must mention is the hygiene factor that is impeccable. Given the quality delivered, this is certainly a value for money experience. Thanks a lot Apollo Diagnostics…keep up the great work!”

Ms. A.Madhavi, Warangal

“Our family physician strictly instructed me to get the checkup done at Apollo Diagnostics. I am glad I respected his opinion. I was attended to as soon as I went in. The technician was a true expert at his job and made it a painless experience for me. I also observed that the centre was spotless and all the staff members were particular about maintaining hygiene. Apollo Diagnostics certainly delivers value for money. I’ll always recommend Apollo Diagnostics to my family and friends.”

Ms. Vimala, Hanmakonda

“My Apollo Diagnostics experience has thus far been truly amazing. Besides unfailingly maintaining the schedule – be it sample taking or report delivery, their sense of cleanliness is also tops. The technicians are well-trained and do their job with diligence and in a friendly manner that puts patients at ease at once. Apollo Diagnostics is setting a very high standard indeed! Now that’s what I call a fine job!”

Ms. G. Jyothi, Warangal

“My mother needed a blood test, but was unable to walk due to pain in her leg. A Phlebotomist from Apollo Diagnostics came home and collected the sample. I was informed, via SMS, that the report could be collected from any of the 3 centres in Dibrugarh, downloaded online or even delivered home for a nominal fee. Although the rates were reasonable, my mother also received a senior citizens discount too! This saved my time, money & energy. My aachhe din really seemed to have arrived! Thank you Apollo Diagnostics and hats off for displaying true professionalism.”

Mr. Alokk Kar Dowerah, Dibrugarh

“Whenever I need to have a blood sample collected from home, I ask for Vasu. He is punctual, courteous and so skilled I hardly feel any pain when he draws the sample. Plus, I truly appreciate how quickly the reports are delivered. Thanks Apollo!”

Mr. Sukumar, Film director, Sriram Nagar, Hyderabad