--- title: Thyroid Antibodies Test type: test id: thyroid-antibodies url: "https://www.test-well.com/tests/thyroid-antibodies" price_usd: 51.99 lab_fee_usd: 6 all_in_usd: 57.99 cpt: 86376, 86800 category: Thyroid sample: Blood draw fasting_required: false results_in: "3–5 business days" labs: - Quest - Labcorp orderable: true reviewed_at: 2026-09-14 order_url: "https://www.test-well.com/cart?add=thyroid-antibodies&utm_source=ai_agent&utm_medium=markdown" --- # Thyroid Antibodies Test > Thyroid Antibodies measures TPO Antibodies and Thyroglobulin Antibodies from a standard blood draw. At TestWell it costs $51.99 plus a $6 lab fee, needs no fasting, and results post in 3–5 business days. Physician-authorized with no doctor's visit or insurance needed; draw at Quest or Labcorp. ## Key facts | Fact | Value | | --- | --- | | Price | $51.99 + $6 lab processing fee per order ($57.99 all-in for this test alone) | | CPT code | 86376, 86800 | | Sample | Blood draw | | Fasting | Not required | | Results | 3–5 business days | | Labs | Quest Diagnostics, Labcorp | | Biomarkers measured | 2 | | Physician authorization | Included — no doctor's visit, referral or insurance needed | | Payment | Card, HSA or FSA; cash-pay only (no insurance billing) | ## What does the Thyroid Antibodies test tell you? Detects autoimmune thyroid conditions like Hashimoto's and Graves' disease. Thyroid antibody tests detect antibodies that attack the thyroid gland, which is the hallmark of autoimmune thyroid diseases. This includes TPO antibodies (associated with Hashimoto's thyroiditis) and thyroglobulin antibodies. These tests are important for anyone with abnormal thyroid levels, a family history of thyroid disease, or symptoms of thyroid dysfunction. **Clinical use:** Measures TPO antibodies + Thyroglobulin antibodies to diagnose autoimmune thyroid disease (Hashimoto's, Graves'). Confirms etiology when TSH is abnormal. ## Who should order it? Anyone with abnormal TSH or Free T4, family history of autoimmune thyroid disease, unexplained miscarriage, postpartum thyroiditis suspicion, or other autoimmune conditions. ## Biomarkers measured - [TPO Antibodies](https://www.test-well.com/biomarkers/tpo-antibodies) - [Thyroglobulin Antibodies](https://www.test-well.com/biomarkers/thyroglobulin-antibodies) ## Price by lab | Lab | Test price | All-in (with $6 fee) | Notes | | --- | --- | --- | --- | | Quest Diagnostics | $51.99 | $57.99 | Choose at checkout; walk-in patient service centers nationwide (not NY/NJ) | | Labcorp | $51.99 | $57.99 | Choose at checkout; walk-in patient service centers nationwide (not NY/NJ) | Rhode Island is not served. Prices are identical online and in the lab; no draw fee or physician fee is added. ## How much does a Thyroid Antibodies test cost? A Thyroid Antibodies test costs $51.99 at TestWell — $57.99 all-in when ordered alone, because the $6 lab processing fee is charged once per order, with no draw fee or physician fee added. Hospital outpatient labs typically bill around $220.00 self-pay for the same test, and often more. With insurance, what you pay depends on your deductible and your plan's negotiated rate; TestWell's price is fixed before the draw and is HSA/FSA-eligible. | Where you order | Price | One test, all-in | Notes | | --- | --- | --- | --- | | TestWell (drawn at Quest or Labcorp) | $51.99 | $57.99 | Includes the one $6 lab processing fee, charged once per order | | Hospital outpatient lab, self-pay (typical) | $220.00 | $220.00 | Reference figure; hospital charges vary widely by facility and are often higher | Lab test codes: Quest test code 7260 · Labcorp test no. 006684. ## How do you prepare? No fasting required. No special preparation needed. ## Related conditions - Hashimoto thyroiditis (E06.3) - Graves disease (E05.00) - Postpartum thyroiditis (O90.5) - Autoimmune thyroid disease (E06.3) ## Common questions about the Thyroid Antibodies test ### Which antibodies are included? Two: TPO (Thyroid Peroxidase) antibodies and Thyroglobulin antibodies. TPO is the more sensitive marker for Hashimoto's; Thyroglobulin adds confirmation. For Graves' disease specifically, TSI (Thyroid-Stimulating Immunoglobulin) is a different test. ### What's a positive thyroid antibody result? TPO antibodies above 35 IU/mL or thyroglobulin antibodies above 4 IU/mL are typically considered positive. Strongly elevated TPO (>500) with abnormal TSH essentially confirms Hashimoto's. ### Can I have antibodies without thyroid disease? Yes — about 10% of healthy adults have detectable TPO antibodies without dysfunction. But positive antibodies raise the lifetime risk of developing overt hypothyroidism by 2-4x, so they warrant annual TSH monitoring. ### How much do thyroid antibodies cost without insurance? On TestWell, the Thyroid Antibodies test (TPO + Thyroglobulin Ab) is $51.99. Quest Direct lists the bundle at $75, walk-in hospital labs typically bill $180-220 without insurance. ### What are the CPT codes for thyroid antibodies? TPO antibodies: CPT 86376. Thyroglobulin antibodies: CPT 86800. Both billed together on a single requisition. ### Do I need to fast? No fasting required. Antibody levels don't fluctuate with meals or time of day. ### Should I order antibodies with other thyroid tests? Yes when investigating new-onset thyroid disease. The [Complete Thyroid Panel](https://www.test-well.com/tests/thyroid-complete-panel) bundles [TSH](https://www.test-well.com/tests/tsh), [Free T4](https://www.test-well.com/tests/free-t4-test), [Free T3](https://www.test-well.com/tests/free-t3), and antibodies for a one-and-done thyroid workup at a discount. ## How to order 1. Add to cart: https://www.test-well.com/cart?add=thyroid-antibodies&utm_source=ai_agent&utm_medium=markdown 2. Create an account or sign in, confirm your state and preferred lab, pay by card, HSA or FSA. 3. A licensed physician authorizes the order (usually within minutes); the requisition arrives by email. 4. Walk into any Quest Diagnostics, Labcorp patient service center — no appointment needed at most sites. 5. Results post to your TestWell portal in 3–5 business days with reference ranges and flags. ## Related - [Blood Tests for Thyroid Symptoms](https://www.test-well.com/guides/blood-tests-for-thyroid-symptoms) - [Hashimoto's Thyroid Panel](https://www.test-well.com/tests/hashimotos-thyroid-panel) — 3 tests · $97.99 - [Advanced Thyroid Panel](https://www.test-well.com/tests/advanced-thyroid-panel) — 7 tests · $129.99 - [Free T3 (Triiodothyronine)](https://www.test-well.com/tests/free-t3) — $30.99 - [Free T4 (Thyroxine)](https://www.test-well.com/tests/free-t4-test) — $23.99 - [Reverse T3](https://www.test-well.com/tests/reverse-t3) — $35.99 - [T3 Uptake](https://www.test-well.com/tests/t3-uptake-test) — $22.99 - [T3, Total (Triiodothyronine)](https://www.test-well.com/tests/total-t3-test) — $24.99 - [All Thyroid tests](https://www.test-well.com/tests/category/thyroid) - [Full test directory](https://www.test-well.com/tests/directory) --- Medically reviewed by Youmna DiStefano, MD (Medical Reviewer, TestWell); last reviewed 2026-09-14. Review policy: https://www.test-well.com/reviewers/youmna-distefano-md Canonical page: https://www.test-well.com/tests/thyroid-antibodies Machine-readable catalog: https://www.test-well.com/api/catalog.json · MCP server: https://www.test-well.com/mcp · Overview for agents: https://www.test-well.com/llms.txt Prices are cash-pay, in USD, and include physician authorization; every order adds one flat $6 lab processing fee. Educational content is not a diagnosis — discuss results with a clinician.