Thyroid Receptor Antibodies
Private Thyroid Receptor Antibodies testing in London for £214, measuring one Graves'-related autoimmune marker with results in around 5 days.
Turnaround time
5 business days
Biomarkers count
1
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Overview of the Thyroid Receptor Antibodies Test
The Thyroid Receptor Antibodies blood test measures autoantibodies directed against the Thyroid Stimulating Hormone receptor on thyroid cells.
The test assesses 1 specialist autoimmune marker: TSH-Receptor Antibodies.
Thyroid Receptor Antibodies are commonly abbreviated to TRAb.
These antibodies can interact with the TSH receptor and alter thyroid activity.
In Graves' disease, the predominant antibodies stimulate the receptor.
This causes the thyroid gland to produce excessive amounts of thyroid hormone and is the principal autoimmune mechanism behind Graves' hyperthyroidism.
TRAb testing is therefore particularly useful when somebody has biochemical hyperthyroidism and the clinical question is whether Graves' disease is responsible.
The test can help distinguish autoimmune Graves' disease from other causes of thyroid overactivity, including toxic nodules or thyroiditis.
TRAb can also be used in selected cases to monitor disease activity during or after treatment.
Falling concentrations can accompany reduced autoimmune activity, although treatment decisions should not be based on the antibody result alone.
Pregnancy creates an additional clinical consideration.
TRAb are IgG antibodies and can cross the placenta.
In a pregnant person with current or previous Graves' disease, persistently elevated antibodies can therefore have implications for fetal and neonatal thyroid function.
Specialist obstetric and endocrine monitoring may be required.
A negative TRAb result makes Graves' disease less likely but does not exclude every case.
The result should be interpreted alongside TSH, Free T4, Free T3, symptoms, thyroid examination and imaging where appropriate.
What Does the Thyroid Receptor Antibodies Test Check?
The test detects antibodies directed against the TSH receptor and can provide evidence of autoimmune thyroid stimulation associated particularly with Graves' disease. This test measures 1 specialist biomarker.
TSH-Receptor Antibodies
Measures antibodies directed against the Thyroid Stimulating Hormone receptor, providing an important autoimmune marker for Graves' disease and selected pregnancy or treatment-monitoring situations.
Who May Benefit From the Thyroid Receptor Antibodies Test?
TRAb testing is particularly useful when hyperthyroidism is present and the underlying cause needs to be established.
People with suppressed TSH and raised thyroid hormones - TRAb can help determine whether Graves' disease is responsible.
People with suspected Graves' disease - Receptor antibodies provide specific autoimmune evidence supporting the diagnosis.
People with thyroid eye disease - Graves' orbitopathy is strongly associated with TSH-receptor autoimmunity.
People with an unclear cause of hyperthyroidism - TRAb can help distinguish Graves' disease from thyroiditis or toxic nodular disease.
People previously treated for Graves' disease - Antibody measurement can sometimes contribute to relapse-risk or disease-activity assessment.
Pregnant people with current or previous Graves' disease - TRAb can cross the placenta and may require specialist monitoring.
People with a previous positive TRAb result - Repeat testing can help assess how autoimmune activity changes over time.
People advised to undergo specialist autoimmune thyroid testing - TRAb can provide information beyond TPO and Thyroglobulin antibodies.
How to Prepare
Do not stop antithyroid medication solely to influence the antibody result.
TRAb can remain detectable even when thyroid hormone concentrations have been brought under control by treatment.
Symptoms and Reasons to Consider the Thyroid Receptor Antibodies Test
Graves' disease typically produces symptoms of thyroid hormone excess, although the severity varies.
Palpitations or a rapid heartbeat - Hyperthyroidism can increase cardiovascular stimulation.
Unexplained weight loss - Excess thyroid hormone can increase metabolic rate.
Heat intolerance or excessive sweating - Thyroid overactivity increases heat production.
Tremor or shakiness - Hyperthyroidism can increase sympathetic nervous-system activity.
Anxiety, irritability or restlessness - Thyroid hormone excess can affect mood and nervous-system function.
Prominent or irritated eyes - Graves' orbitopathy can cause eye symptoms in some people.
A suppressed TSH result - TRAb can help establish whether autoimmune thyroid stimulation is responsible.
Previous Graves' disease with possible recurrence - Repeat antibody and thyroid hormone testing can contribute to reassessment.
TRAb does not replace measurement of TSH, Free T4 or Free T3.
Severe palpitations, chest pain, marked breathlessness, confusion or severe symptoms of thyrotoxicosis require prompt medical assessment.
Pregnant people with current or previous Graves' disease should discuss significant TRAb results with the maternity and endocrine teams.
How to Book Your Thyroid Receptor Antibodies Test
The Thyroid Receptor Antibodies test can be booked privately for specialist investigation of Graves'-related thyroid autoimmunity.
Choose the Thyroid Receptor Antibodies
Select the individual TRAb blood test online.
Select your sample collection option
Choose an in-clinic blood draw or professional home or hotel phlebotomy where suitable.
Attend your appointment
A trained healthcare professional collects the required venous blood sample.
Laboratory analysis
Your serum undergoes specialist measurement of TSH-Receptor Antibodies.
Receive your results securely
Your authorised result is delivered securely and can be interpreted alongside TSH, Free T4 and Free T3 where appropriate.
When Will I Receive My Results?
The current live London Blood Tests page lists a turnaround of approximately 5 days after laboratory receipt for Thyroid Receptor Antibodies.
This is a specialist thyroid autoantibody assay.
The sample undergoes antibody measurement, laboratory quality-control procedures and result authorisation.
Turnaround begins when the specimen reaches the laboratory rather than necessarily from the exact time of blood collection.
Understanding Your Results
A negative TRAb result means significant TSH-Receptor Antibodies were not detected according to the laboratory assay.
This reduces the likelihood of Graves' disease but does not exclude every case.
A positive result indicates that TSH-Receptor Antibodies are present.
In somebody with biochemical hyperthyroidism, a positive result strongly supports Graves' disease as the underlying cause.
The concentration can sometimes provide additional information about autoimmune activity.
However, the number should not be interpreted independently of thyroid hormone results.
People can remain antibody-positive even after TSH and thyroid hormones improve with treatment.
During pregnancy, the degree of TRAb elevation can also have specific clinical implications because the antibodies can cross the placenta.
The laboratory's own reference range should always be used.
Why Book With London Blood Tests?
London Blood Tests provides private TRAb testing for specialist investigation of autoimmune hyperthyroidism.
Measures the principal Graves' disease antibody - TSH-Receptor Antibodies are strongly associated with autoimmune thyroid stimulation.
Helps distinguish causes of hyperthyroidism - TRAb can separate Graves' disease from several non-autoimmune causes of thyroid overactivity.
Relevant to thyroid eye disease - TSH-receptor autoimmunity is associated with Graves' orbitopathy.
Useful in treatment monitoring - Antibody trends can occasionally provide information about disease activity.
Important in selected pregnancies - TRAb can cross the placenta and may require specialist monitoring.
Can complement thyroid hormones - TSH, Free T4 and Free T3 establish the current functional thyroid state.
Professional blood collection - Clinic and suitable home or hotel phlebotomy appointments are available.
Clear pricing - The Thyroid Receptor Antibodies test costs £214.
Private Thyroid Receptor Antibodies Blood Test in London
London Blood Tests provides private Thyroid Receptor Antibodies testing for people requiring specialist assessment of Graves' disease and autoimmune hyperthyroidism.
The test costs £214 and assesses 1 specialist biomarker: TSH-Receptor Antibodies.
Results are expected approximately 5 days after laboratory receipt.
The antibody result should be interpreted alongside TSH, Free T4, Free T3 and the wider thyroid assessment.