The Complete Thyroid Panel

The Complete Panel ($109.99) is the 5-marker version: TSH, Free T4, Free T3, Reverse T3, and TPO Antibodies — covers the diagnostic essentials including conversion problems and the most common autoimmune cause (Hashimoto's). The Advanced Panel ($129.99) adds 2 more markers: Thyroglobulin Antibodies (a second autoimmune marker for Graves' disease and a more sensitive Hashimoto's screen) and T3 Uptake (a binding-protein evaluation). Most people with thyroid symptoms get all the answers they need from the Complete Panel; the Advanced Panel is for people with persistent unexplained symptoms or a family history of multiple thyroid conditions.

Most primary care doctors run TSH as the only thyroid screen because (1) it catches the most common cases, (2) insurance reimbursement is straightforward for TSH alone but pushes back on "unnecessary" panels, and (3) most med school training treats Free T3, Reverse T3, and antibodies as specialty-only tests. The result is that mild conversion problems and early autoimmune thyroid disease routinely get missed for years. Ordering the Complete Panel directly cuts past the insurance gatekeeping and gives you the data to bring back to your doctor (or an endocrinologist or functional medicine practitioner).

Morning draws (7-10 AM) are preferred because TSH follows a circadian rhythm and peaks in the early morning. No fasting required. If you're on thyroid medication (Synthroid, levothyroxine, Armour, etc.), DON'T take your dose before the draw — wait until after, because the medication will artificially elevate Free T4 readings for several hours. If you're checking biotin supplements, stop them 72 hours before the draw — biotin interferes with several thyroid assays and can produce false readings.

That's exactly the case the Complete Panel is designed for. "Normal range" is statistically wide, and many people feel symptomatic at lab values that fall inside it. Pay attention to: Free T3 in the lower third of the range (often signals conversion problems), Reverse T3 above 15 ng/dL (suggests active conversion blockade), TSH above 2.5 mIU/L (functional medicine considers this "high-normal" hypothyroidism), or any TPO antibody elevation (early Hashimoto's). Bring your results to a doctor or functional medicine practitioner who treats based on optimal ranges, not just lab-defined "normal."

No. Every TestWell order is reviewed and approved by a licensed physician at no extra cost — that's how we cover the legal requirement for lab orders. You don't need to bring anything to the lab except your ID.

Walk into any Quest Diagnostics or Labcorp location — over 4,000 across 49 states. No appointment needed at most locations. After ordering, you'll get a digital requisition you bring (or show on your phone) at the lab.

Most results are back in 1-3 business days. You'll get an email when they're ready, and you can view them in your TestWell account immediately — no waiting for a doctor to call.

Yes. TestWell accepts HSA and FSA cards directly at checkout. We're an eligible medical expense, and you'll get a digital receipt for your records.