T3 Total

The T3 Total Test is a blood test that measures the total amount of triiodothyronine (T3) hormone in the bloodstream, including both protein-bound and unbound T3.

T3 is an important thyroid hormone that helps regulate metabolism, energy production, body temperature, and other essential body functions.

This test helps healthcare professionals evaluate thyroid function and investigate possible thyroid disorders, particularly hyperthyroidism (overactive thyroid).

What Does This Test Check?

• Measures total triiodothyronine (T3) levels in the blood.

• Helps assess thyroid gland function.

• Supports the investigation of hyperthyroidism.

• May assist in evaluating abnormal thyroid hormone levels.

• Helps monitor thyroid conditions alongside TSH and T4 tests.

Sample Requirements

• Sample Type: Clotted Blood or Serum

• Required Quantity: 2–3 ml

• Department: Clinical Chemistry / Hormone Testing

Patient Preparation

• Fasting is generally not required unless instructed by your doctor or laboratory.

• Inform your healthcare provider about thyroid medications and supplements, especially biotin.

• Pregnancy and certain medications may affect total T3 levels.

• Follow any specific sample collection instructions provided by the laboratory.

Important Information

Total T3 levels may be affected by changes in thyroid-binding proteins, pregnancy, medications, and other health conditions. Results should be interpreted alongside TSH, T4, medical history, and clinical findings. An abnormal T3 result alone does not establish a thyroid diagnosis.

Reporting Time: To be confirmed by the laboratory.

Please confirm test availability and sample collection requirements with the laboratory before booking.