Thyroid Stimulating Hormone (TSH), Ultrasensitive Test
About Thyroid Stimulating Hormone (TSH), Ultrasensitive Test
| Field | Value |
|---|---|
| Also Known As | Third-generation TSH test, Ultra-sensitive Thyroid Stimulating Hormone (uTSH), TSH 3rd Generation, Thyrotropin Ultrasensitive, Sensitive TSH (s-TSH) |
| Sample Type | Venous blood (serum) |
| Fasting Required | No |
| Report Time | Within 48 hours |
| Recommended For | All ages and genders, particularly women, those over 60, pregnant women, and individuals with suspected thyroid disorders |
| Price | Starting at ₹250 |
What Is a Thyroid Stimulating Hormone (TSH), Ultrasensitive Test?
The TSH Ultrasensitive test measures the level of thyroid-stimulating hormone in your blood. TSH is produced by the pituitary gland and tells the thyroid to make and release its hormones. Also called the Third-generation TSH test or uTSH, this version of the test is more precise than a standard TSH test and can detect even very small changes in TSH levels. A small blood sample from a vein in your arm is all that is needed.
What Does a Thyroid-Stimulating Hormone (TSH), Ultrasensitive Test Measure?
The ultra-sensitive thyroid-stimulating hormone test measures a single key hormone. The table below explains what is being measured and why it matters.
| Parameter | What It Is | Why It Matters |
|---|---|---|
| TSH (Thyroid Stimulating Hormone) | A hormone produced by the pituitary gland that signals the thyroid to release T3 and T4 | Abnormal levels can point to an overactive or underactive thyroid; the ultrasensitive method picks up subtle changes that a standard test may miss |
Why is a thyroid-stimulating hormone (TSH), Ultrasensitive Test Done?
Doctors order this test when they need a clear picture of how well the thyroid gland is working.
Common Symptoms That May Require This Test
Several symptoms may prompt your doctor to request a TSH Ultrasensitive test. These include:
Symptoms of an overactive thyroid:
- Anxiety
- Difficulty in sleeping
- Tiredness
- Sensitivity to heat
- Diarrhea
- Persistent thirst
- Itchiness
Symptoms of an underactive thyroid:
- Tiredness
- Sensitivity to cold
- Weight gain
- Constipation
- Depression
- Muscle aches and weakness
Conditions This Test Can Help Detect
The Third-generation TSH test can help identify a range of thyroid-related conditions, including:
- Hypothyroidism (underactive thyroid)
- Hyperthyroidism (overactive thyroid)
- Subclinical hypothyroidism or hyperthyroidism (mild, early-stage thyroid dysfunction with no obvious symptoms)
- Graves' disease (an autoimmune cause of overactive thyroid)
- Hashimoto's thyroiditis (an autoimmune cause of underactive thyroid)
- Goitre (enlarged thyroid gland)
- Distinguishing between primary (thyroid), secondary (pituitary), and tertiary (hypothalamus) hypothyroidism
Thyroid Stimulating Hormone TSH Ultrasensitive Test During Pregnancy
Thyroid function changes significantly during pregnancy. TSH levels tend to fall in the first trimester due to the influence of pregnancy hormones, then gradually return towards normal levels in later trimesters. Doctors use trimester-specific reference ranges when interpreting results during pregnancy. Thyroid hormone deficiency in pregnancy has been linked to complications, including poor foetal development and pregnancy loss, which is why this test is often ordered alongside T3 and T4 tests for pregnant women.
Thyroid Stimulating Hormone TSH Ultrasensitive Test for Chronic Disease Monitoring
For people already on thyroid medication, this test is a key monitoring tool. If a dose is changed, testing every six weeks is generally recommended until levels stabilise; once stable, annual testing is standard practice. In patients being treated for thyroid cancer with thyroxine suppression therapy, the uTSH test helps confirm that TSH is being kept at the required low level.
How to Prepare and What to Expect
There is very little preparation needed for this test, making it straightforward for most people.
Do You Need to Fast?
No, fasting is not required. You can eat and drink as normal before giving your sample. However, morning collection is preferred, as TSH levels can vary slightly at different times of the day.
Practical Tips Before Your Test
A few simple steps can help ensure a smooth experience and reliable results:
- Book your appointment for the morning if possible
- Inform the phlebotomist about all medicines, supplements, and vitamins you are currently taking
- If you take biotin (vitamin B7) supplements, tell your doctor before the test, as biotin can interfere with results
- Wear a top with sleeves that can be rolled up easily
- Stay well hydrated before the test
Step-by-Step Procedure
Here is what typically happens during sample collection:
- You will sit comfortably with your arm resting on a flat surface or armrest.
- A small elastic band is tied around your upper arm to make the veins easier to see.
- The skin over the vein is cleaned with an alcohol swab.
- A thin, sterile needle is gently inserted into the vein, and a small amount of blood is drawn into a test tube.
- The needle is removed, and a cotton ball or gauze is placed on the site to stop any bleeding.
- A small bandage is applied. The sample is then labelled and sent to the laboratory for analysis.
Factors That Can Affect Accuracy
Certain factors may influence your TSH Ultrasensitive result. These include:
- Certain medications, including glucocorticoids, steroids, opioid painkillers (such as morphine), dopamine, and some chemotherapy drugs
- Biotin (vitamin B7) supplements
- Irregular sleep patterns or severe stress
- Recent serious illness or hospitalisation
- Time of day at which the sample is collected
Understanding Your Thyroid Stimulating Hormone TSH Ultrasensitive Test Results
Your results should always be reviewed with your doctor, who will consider them alongside your symptoms and medical history.
| Parameter | Normal (Adults) |
|---|---|
| TSH (Adults - 21 to 99 years) | 0.27 to 4.2 mIU/L |
| TSH (Newborns, up to 5 days) | 0.7 to 15.2 µIU/mL |
| Infants (6 – 90 days old) | 0.72 – 11.0 mIU/mL |
| Babies (4 – 12 months old) | 0.73 – 8.35 mIU/mL |
| Kids (1 – 6 years old) | 0.7 – 5.97 mIU/mL |
| Kids (7 – 11 years old) | 0.6 – 4.84 mIU/mL |
| Teens and young adults (12 – 20 years old) | 0.51 – 4.3 mIU/mL |
| TSH (Pregnancy – 1st trimester) | 0.8 to 2.99 mIU/L |
| TSH (Pregnancy – 2nd trimester) | 0.11 to 3.98 mIU/L |
| TSH (Pregnancy – 3rd trimester) | 0.48 to 4.71 mIU/L |
These ranges are general guidelines. Your doctor will interpret your results based on your age, health history, and other factors. Always consult a qualified healthcare professional for personalised medical advice.
Results During Special Conditions
Results can look different depending on your circumstances. Your doctor will account for the following when reviewing your report:
- During pregnancy, TSH is naturally lower in the first trimester and rises gradually. Trimester-specific ranges must be used rather than the standard adult range.
- Older adults (above 80) may have slightly higher TSH levels without any associated thyroid condition.
- Patients who are seriously ill from unrelated conditions may show temporarily low or fluctuating TSH readings.
How to Maintain Healthy Levels
These general wellness habits support overall thyroid health:
- Include adequate iodine in your diet through iodised salt and seafood
- Aim for regular physical activity and consistent sleep to help manage stress
- If you have a known thyroid condition, speak to your doctor before making significant changes to your diet, particularly with raw cruciferous vegetables in large amounts
Lupin Diagnostics Thyroid Stimulating Hormone (TSH), Ultrasensitive Test Price and Home Collection
The TSH Ultrasensitive test starts at approximately ₹250 at Lupin Diagnostics, with home collection available across major cities.
| City | Approximate Price (₹) |
|---|---|
| Bhopal | ₹300 |
| Mumbai | ₹350 |
| Bengaluru | ₹250 |
| Chennai | ₹300 |
| Hyderabad | ₹300 |
| Kolkata | ₹350 |
| Pune | ₹325 |
| Guwahati | ₹350 |
Prices are indicative and may vary by location. Please confirm the current price at the time of booking.
How to Book
- Select the test on the Lupin Diagnostics website.
- Choose your city and preferred time slot.
- Opt for home sample collection by a certified phlebotomist, or visit your nearest Lupin Diagnostics centre.
- Receive your report via email or WhatsApp within the stipulated turnaround time.
Home Collection
Lupin Diagnostics offers home sample collection for the Third-generation TSH test across cities in India, so you can give your sample from the comfort of your home. All samples are processed in NABL-accredited laboratories, and your digital report is delivered via email or WhatsApp within 48 hours.
Frequently Asked Questions
The TSH Ultrasensitive test uses a more advanced method that can detect even very small changes in TSH levels. This makes it better suited for identifying early or subclinical thyroid disorders that a standard TSH test might miss. Your doctor will advise which version is appropriate for you.
No fasting is needed. Morning collection is preferred because uTSH levels can vary slightly throughout the day, but this is a preference rather than a strict requirement.
If your dose has recently changed, testing every six weeks is generally advised until your levels stabilise. Once stable, an annual test is typically sufficient. Follow your doctor's guidance, as the frequency may vary based on your condition and treatment.
Yes, several medicines can alter TSH readings. These include steroids, certain opioid painkillers, dopamine, and some chemotherapy drugs. Biotin supplements can also interfere with results. Always tell your doctor and the collection team about everything you are currently taking.
Yes. TSH levels shift across the three trimesters of pregnancy, so doctors use trimester-specific ranges rather than standard adult values. If you are pregnant, make sure to inform your doctor and the laboratory so the correct ranges are applied when interpreting your results.
A mildly raised TSH with normal thyroid hormone levels is called subclinical hypothyroidism. It affects around 3% to 8% of the general population and often causes no noticeable symptoms initially. Your doctor will decide whether any action is needed based on your full clinical picture.
Doctors commonly order the ultra-sensitive thyroid-stimulating hormone test when a patient reports ongoing fatigue, unexplained weight changes, sensitivity to cold or heat, dry skin, hair thinning, anxiety, tremors, or irregular periods. It may also be ordered as part of a routine health check or pregnancy monitoring.
Thyroid Stimulating Hormone (TSH), Ultrasensitive Test: Booking, Price, and Results
