TSH Receptor Ab (TRAb)

. TSHR Antibodies (TRAb) are autoantibodies directed against the TSH receptor on the surface of thyroid cells. These antibodies can either stimulate or block the activity of the thyroid gland, influencing thyroid function.
. TRAb is a highly specific marker for Graves' disease (autoimmune hyperthyroidism) and can help confirm the diagnosis, especially when clinical signs and symptoms (e.g., goiter, exophthalmos, and hyperthyroid symptoms) are present. It is used also to monitor disease activity during treatment.
. It helps differentiate Graves' disease from other causes of hyperthyroidism, such as toxic multinodular goiter or thyroiditis, which do not typically involve TRAb production.
. It helps in assessing the risk of fetal thyroid issues in pregnant women with a history of Graves' disease.

  • Thyroid

Patient Instructions:
. No special preparation is required.
. You will need to stop dietary supplements containing biotin (Vitamin B7), commonly found in hair, skin, and nail supplements, and multivitamins, at least 8 hours before sample collection. However, it is highly recommended that patients taking massive biotin doses stop for 72 hours.
. Please share your treatment history, relevant clinical information, and a list of current medications (if any) for accurate assessment.
Sample Type:
Serum
Result Time:

After 2 hours 20 minutes
After cutoff: 8:50 AM next day

Storage & Transportation:
-
Cutoff Times:

9:30 PM Monday – Saturday
8:30 PM Sunday

30 minutes required for samples arrived at Cao Thang till receive by Laboratory

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