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Hormones Thyroid Health

Triidothyrinine (T3) LIS Code: T3

Measure T3 hormone levels with a private blood test for thyroid function and metabolic assessment.

→ 4 hours → UKAS-accredited lab → No GP referral needed
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Test Price
£31
Results in
4 hours
from sample receipt at lab
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Sample
Blood
£31
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⏱ Results in 4 hours · LIS: T3
ℹ️ TAT begins when your sample is received at our lab.
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Phlebotomy Fee: £25
A one-off £25 phlebotomy fee applies per visit — this covers your blood draw regardless of how many tests you book in the same appointment.

Test Categories

Hormones Thyroid Health Thyroid Endocrinology Hormones Metabolism

About this test

Understanding Triiodothyronine (T3)

Triiodothyronine, commonly known as T3, is a vital thyroid hormone responsible for regulating numerous physiological functions. It plays a central role in influencing metabolism, heart rate, body temperature, and the development and activity of various organs and tissues.

Diagnostic Importance of T3 Testing

T3 testing is essential in evaluating thyroid function and is particularly useful in diagnosing T3-hyperthyroidism—a condition where T3 levels are elevated even when other thyroid hormone levels remain normal. This test is also used to detect the early stages of hyperthyroidism and to help identify thyrotoxicosis factitia, a condition caused by the intentional or accidental intake of excess thyroid hormones.

T3 Thyroid Testing in Slough and Surrounding Areas

Private T3 thyroid blood tests are available in Slough, Langley, Windsor, Burnham, and Maidenhead. These tests support early diagnosis of thyroid disorders, allowing for effective management of symptoms such as weight changes, fatigue, rapid heartbeat, and anxiety. Timely testing is essential for maintaining hormonal balance and overall well-being.

Our Professional Services Our diagnostic testing is carried out by Medical Diagnosis, a UKAS ISO 15189 accredited laboratory, ensuring all results meet the highest UK standards of quality and accuracy. Clinical consultations and treatments, including Testosterone Replacement Therapy (TRT) and Weight Management programmes, are delivered through Medical Diagnosis Victoria, which is registered with the Care Quality Commission (CQC). All clinical services are provided by GMC-registered doctors with extensive experience, following thorough medical assessment in line with UK regulatory standards.
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