T4 Antibody Test
Also known as: Thyroxine Autoantibody Test, Anti-T4 Antibody Test
T4 Antibody Test test available at DNA Labs India for ₹19,000. Uses Radiobinding Assay on Serum samples. Results in Results are typically available within 2-3 weeks after sample collection.. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr Ramarao Paidisetty
Consultant Biochemist · Reg: 21504
Last reviewed: September 7, 2026
Overview
To diagnose autoimmune thyroiditis or Hashimoto's disease by measuring T4 antibodies in the blood, helping in the assessment and management of thyroid disorders.
- Test Code
- 1420
- Price
- ₹19,000
- Sample Type
- Serum
- Result Time
- Results are typically available within 2-3 weeks after sample collection.
- Fasting Required
- No
- Method
- Radiobinding Assay
Sample Collection
Duly filled Test Send Out Consent Form (Form 35) is mandatory. No fasting required.
Method: Venipuncture
Laboratory Analysis
A healthcare provider will draw a blood sample from a vein in your arm using a sterile needle.
Report Delivery
Apply pressure to the puncture site with a cotton ball to stop bleeding and avoid strenuous activity for a few hours.
Timeline: Results are typically available within 2-3 weeks after sample collection.
Patient Instructions
About This Test
Who Should Get This Test
To diagnose autoimmune thyroiditis or Hashimoto's disease by measuring T4 antibodies in the blood, helping in the assessment and management of thyroid disorders.
How to Prepare
- No fasting required
- Bring a valid ID and the completed consent form
- Inform the technician about any medications or supplements
Doctor's Notes
Reviewed by Dr Ramarao Paidisetty — MBBS, MD (Biochemistry) · Reg. No. 21504
"This test is crucial for diagnosing autoimmune thyroid conditions and monitoring treatment effectiveness in patients with thyroid disorders."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Clotted or hemolyzed sample
- Inadequate sample volume
- Mislabeled or unlabeled specimen
Understanding Your Results
Negative
No significant level of T4 antibodies detected, suggesting no autoimmune thyroid activity.
Positive
Elevated T4 antibodies indicate autoimmune thyroiditis, such as Hashimoto's disease, requiring further evaluation.
Consult an endocrinologist if you experience persistent symptoms of thyroid dysfunction, such as fatigue or weight gain, or if your test results are positive.
Limitations
- ⚠May not distinguish between different types of autoimmune thyroid disease
- ⚠Results can be affected by sample handling and storage conditions
Risks & Considerations
- ●Minor bruising at the puncture site
- ●Rare risk of infection
- ●Dizziness or lightheadedness during blood draw
Interfering Factors
- ●Presence of heterophilic antibodies
- ●Recent administration of radioisotopes
- ●Autoimmune conditions other than thyroid
Compare With Similar Tests
| Test | T4 Antibody Test | TSH Test | Anti-TPO Antibody Test | Free T4 Test |
|---|---|---|---|---|
| Comparison | T4 Antibody Test |
Frequently Asked Questions
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