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Thyroid Test Singapore

Thyroid testing involves blood tests that measure hormone levels produced by your thyroid gland, a butterfly-shaped organ located at the base of your neck. These tests help doctors understand how well your thyroid is functioning and whether it’s producing the right amount of hormones your body needs. The primary goal is to diagnose thyroid disorders such as an overactive thyroid (hyperthyroidism) or underactive thyroid (hypothyroidism).

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Dr Adrian Mondry
Physician (FRG) | MD (HHU Düsseldorf) | MRCP (London) | IM Specialist (ÄKNo) | Hypertensiologist (DHL)
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Indications Benefits Types Thyroid and Heart Health Results FAQ
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Indications
Benefits
Types
Thyroid and Heart Health
Results
FAQ

Who Should Take a Thyroid Test in Singapore?

Your doctor may recommend thyroid testing if you’re experiencing symptoms that suggest thyroid dysfunction or if you have certain risk factors.

  • Unexplained weight changes

    Weight gain or loss without changes to your diet or exercise routine may indicate thyroid problems. An underactive thyroid often causes weight gain, whilst an overactive thyroid can lead to sudden weight loss.

  • Persistent fatigue or restlessness

    Feeling constantly tired, weak, or unusually energetic and restless can signal thyroid imbalances.

  • Heart rate irregularities

    A racing heart, palpitations, or unusually slow heart rate may be linked to thyroid function.

  • Family history of thyroid disease

    Having relatives with thyroid conditions increases your risk of developing similar problems.

Benefits of Thyroid Test

Thyroid testing provides valuable information that helps guide your healthcare decisions and treatment plans.

  • Early detection of thyroid disorders

    Identifying thyroid problems before they cause significant symptoms allows for prompt treatment.

  • Prevention of long-term complications

    Untreated thyroid disorders can affect your heart, bones, and other organs over time. Early detection and treatment help prevent these health problems.

  • Personalised treatment guidance

    Test results help your doctor determine the most appropriate treatment approach for your specific situation. This ensures you receive the right type and dose of medication if treatment is needed.

  • Symptom resolution

    Proper thyroid function affects your energy levels, mood, weight, and overall sense of wellbeing. Identifying and treating thyroid issues can help restore these aspects of your health.

Types of Thyroid Blood Tests in Singapore

Different blood tests offer insights into thyroid hormone activity and underlying causes of thyroid disorders:

Thyroid Stimulating Hormone (TSH)

A sensitive first-line test to detect underactive or overactive thyroid states.

Free T4 (Thyroxine)

Measures the main hormone produced by the thyroid and helps assess severity.

Free T3 (Triiodothyronine)

Evaluates active hormone levels and may be helpful in symptomatic patients with borderline TSH/T4.

Thyroid Antibodies

Detects autoimmune causes such as Hashimoto’s thyroiditis or Graves’ disease.

Thyroid and Heart Health

Thyroid problems can have a direct impact on your heart and blood pressure. When your thyroid is not working properly, it can cause changes in how fast or hard your heart beats, even before other symptoms appear.

Underactive thyroid (hypothyroidism): can lead to a slower heart rate, fluid retention (especially in the legs), and elevated bottom blood pressure numbers (diastolic pressure)..

Overactive thyroid (hyperthyroidism): can cause a fast or irregular heartbeat (palpitations), nervousness, and may increase the risk of heart rhythm problems like atrial fibrillation.

Untreated thyroid disorders can strain your heart over time, affecting heart rate and blood pressure. Thyroid testing helps protect not just energy and weight balance, but also your heart health, especially if you have high blood pressure or related risks. Your doctor will factor this into your overall care plan.

Do you often feel tired, cold, or struggle with weight gain without a clear reason?

Consult our accredited specialist for accurate thyroid screening today.

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Results Review and Follow-Up

Once your thyroid test results are ready, your internal medicine specialist will review your hormone levels and explain whether your thyroid is underactive, overactive, or within normal range.

Follow-up testing ensures your treatment remains effective and helps prevent long-term complications. Your internal medicine and hypertension specialist will determine the appropriate monitoring schedule and guide you in managing any underlying or associated conditions.

Frequently Asked Questions (FAQ)

How often should I have my thyroid tested?

The frequency depends on your individual circumstances and whether you have existing thyroid conditions. People without thyroid problems may only need testing every few years or when symptoms develop, whilst those on thyroid medication typically require monitoring every 6-12 months.

Can recent illness change my thyroid test results?

Yes, significant physical stress, acute illness, or major life events can temporarily alter thyroid hormone levels. If you’ve been unwell recently, inform your doctor as they may recommend retesting once you’ve recovered.

Can thyroid problems cause high blood pressure?

Both overactive and underactive thyroid conditions can affect blood pressure and heart function. Your Internal Medicine and Hypertension Specialist can evaluate how thyroid disorders might be contributing to cardiovascular symptoms.

Do I need to stop supplements before my test?

Biotin supplements can interfere with some thyroid tests, so you may need to stop taking them for several days beforehand. Always inform your doctor about all supplements you’re taking, including multivitamins.

What happens if my results are borderline?

Borderline results may require repeat testing or additional tests to clarify your thyroid status. Your doctor will consider your symptoms, medical history, and other factors when interpreting results that fall in intermediate ranges.

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Dr Adrian Mondry

Physician (FRG)|MD (HHU Düsseldorf)|Specialist for Internal Medicine (ÄKNo)|Hypertensiologist (DHL)|MRCP (London)

Dr. Mondry has over 30 years of experience as an internal medicine & hypertension specialist.

  • Previously a Senior Consultant in the Department of Medicine at the National University Hospital and Ng Teng Fong General Hospital, where he is currently a visiting consultant.

  • Hypertension Specialist accredited by the German Hypertension League (DHL)

  • Contributed to the latest Singapore ACE Clinical Guidance on “Hypertension – Tailoring the Management Plan to Optimise Blood Pressure Control” as a committee member.

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