Lab Tests for Hashimoto's Thyroiditis
Hashimoto's thyroiditis is an autoimmune condition where your immune system attacks your thyroid gland, gradually reducing its ability to produce hormones. It is the most common cause of hypothyroidism in the United States. Lab testing for Hashimoto's goes beyond basic thyroid function — thyroid antibody tests confirm the autoimmune component and help distinguish Hashimoto's from other causes of hypothyroidism. With JustLabs, you can order a complete Hashimoto's lab panel online without a doctor visit, at transparent self-pay prices.
Recommended Tests
Includes 5 of the 6 recommended tests below (not included: Reverse T3).
All 6 recommended tests
$88 + one $18 order fee = $106 all-in
Autoimmune gastritis often travels with Hashimoto's and can quietly cause low B12 or iron. This panel checks intrinsic factor antibody, parietal cell antibody and fasting gastrin together.
$92 · 3 tests + $18 order fee per order
Understanding Your Results
| Test | Normal Range | Low Means | High Means |
|---|---|---|---|
| TPO Antibodies | <35 IU/mL | No autoimmune thyroid activity detected | Hashimoto's thyroiditis very likely |
| TG Antibodies | <1 IU/mL | Normal — no thyroglobulin attack | Supports Hashimoto's diagnosis |
| TSH | 0.40–4.50 mIU/L | Possible hashitoxicosis flare | Thyroid underperforming from immune damage |
| Free T4 | 0.8–1.8 ng/dL | Thyroid output declining | Transient flare releasing stored hormone |
| Free T3 | 2.3–4.2 pg/mL | Impaired T4-to-T3 conversion | Thyroid flare or overmedication |
How to Order
Order Online
Select your tests and pay securely. A licensed physician authorizes your order.
Visit Quest Diagnostics
Walk into any of 2,200+ Quest locations nationwide. No appointment needed.
Get Results
Results available in your account within 1-2 business days.
Frequently Asked Questions
Related Conditions
Related Articles
Which thyroid tests you actually need to monitor Hashimoto's and track antibody levels.
How to get TSH, Free T4, and Free T3 tested affordably without insurance coverage.
A breakdown of every thyroid marker and what each one tells you about your health.
Content reviewed for accuracy by the JustLabs editorial team.