Use promo code: TH20
Unexplained fatigue, weight changes, brain fog, or mood swings may point to a thyroid imbalance. Get clarity now with our Top 10 Thyroid Tests & Panels—and save 20% with code TH20. Order online in minutes, visit one of 2,100 local draw sites, and get private results (often in 24–48 hours) you can review with your healthcare provider.
Comprehensive coverage: Core thyroid function (TSH, Free T4, Free T3) plus thyroid antibodies (TPO, Thyroglobulin Ab) and other key markers available in select panels.
Actionable insights: Establish baselines, spot trends, and bring objective data to your next appointment.
Convenient & fast: Order 24/7, skip the doctor’s visit to place an order (we provide the requisition), get privateresults quickly.
Budget-friendly: Transparent, cash-pay pricing—now 20% off with TH20. HSA/FSA accepted.
TSH (Thyroid-Stimulating Hormone) – Primary screening for thyroid function
Free T4 & Free T3 – Active thyroid hormones for precision assessment
Thyroid Peroxidase (TPO) Antibodies – Autoimmunity marker (e.g., Hashimoto’s)
Thyroglobulin Antibodies (TgAb) – Additional autoimmunity insight
Optional markers in select panels: Total T3, Total T4, Reverse T3, Thyroglobulin, TSH receptor antibodies/TSI
Choose an individual test or a bundled panel for more value and broader insight.
You have symptoms that could be thyroid-related (low energy, weight changes, hair/skin changes, mood shifts).
You’ve been diagnosed with a thyroid condition and want baseline and trend tracking.
You want data to discuss treatment options with your clinician.
Tiredness/weakness, cold intolerance, constipation, weight gain or difficulty losing weight, dry/rough skin, hair loss, puffy face/eyes, muscle aches or cramps, heavy or irregular periods, slowed thinking, low mood, and elevated cholesterol.
Nervousness, tremor, irritability, racing heartbeat/palpitations, heat intolerance, sweating, increased appetite, more frequent bowel movements, thin/brittle hair, skin thinning, lighter/less frequent periods, and thyroid enlargement.
If these sound familiar, thyroid testing can help reveal the cause.
Shop & Save: Add tests/panels to your cart and apply TH20 for 20% off.
Visit a Draw Site: Choose from 2,100 locations; most visits take 15–30 minutes.
View Private Results: Access clear reports (often in 24–48 hours) and review with your provider.
Comprehensive testing: FT3, FT4, TSH, plus TPO and Thyroglobulin antibodies for a thorough evaluation.
Clear next steps: Results clarify whether symptoms align with hypothyroidism or hyperthyroidism and help inform care.
Confidence at your visit: Arrive prepared for a productive, data-driven conversation with your clinician.
Do I need a doctor’s visit to order?
No. We provide the physician-authorized requisition needed to complete your labs.
How fast are results?
Many tests return results in 24–48 hours, delivered privately to your secure online account.
Will insurance be billed?
No. We offer transparent cash-pay pricing—no surprise insurance charges.
Can I pay with HSA/FSA?
Yes. HSA and FSA cards are accepted at checkout.
What if I’m not sure which panel to choose?
Start with a core thyroid panel (TSH, Free T4, Free T3, TPO/Tg antibodies) and add optional markers (e.g., Reverse T3, Tg, TSH receptor antibodies/TSI) as advised by your provider.
Offer: 20% off the Top 10 Thyroid Tests & Panels
Promo Code: TH20
Notes: Not combinable with other promotions; availability and turnaround may vary by location.
Ready to take the next step? Shop the Top 10 Thyroid Tests & Panels, apply TH20, and get the answers you need to feel your best.
The T4 Free Test measures the level of free thyroxine (T4) in blood, the active thyroid hormone not bound to proteins. It helps diagnose thyroid disorders such as hypothyroidism, hyperthyroidism, and goiter, as well as pituitary conditions affecting hormone regulation. Doctors use this test to evaluate symptoms like fatigue, weight changes, hair loss, or irregular heartbeat and to monitor thyroid replacement or antithyroid therapy, providing insight into metabolic and endocrine health.
The Thyroid Stimulating Hormone (TSH) Test measures TSH levels in blood to assess thyroid function and diagnose hypothyroidism or hyperthyroidism. It evaluates how the thyroid controls metabolism, energy, weight, and heart rate. Doctors use the TSH test to investigate symptoms such as fatigue, hair loss, or mood changes. Frequently included in routine health exams, it is also key for monitoring thyroid disease treatment and overall endocrine balance.
The T3 Free Test measures free triiodothyronine (T3), the active thyroid hormone not bound to proteins, to assess thyroid function. It helps diagnose hyperthyroidism, hypothyroidism, goiter, and pituitary disorders. Doctors order this test to evaluate symptoms like fatigue, weight changes, anxiety, or irregular heartbeat and to monitor thyroid replacement or antithyroid therapy. The Free T3 Test provides key insight into metabolism, energy regulation, and overall endocrine health.
The T4 Total Test measures total thyroxine (T4) in blood, a combination of both bound and unbound (free) T4, to assess thyroid function. Abnormal levels may indicate hypothyroidism, hyperthyroidism, goiter, or pituitary disorders. Doctors use this test to evaluate symptoms like fatigue, weight changes, hair loss, or irregular heart rate and to monitor thyroid replacement or antithyroid therapy. The T4 Total Test provides key insight into metabolic, hormonal, and endocrine health.
The T3 Total Test measures total triiodothyronine (T3), a combination of both bound and unbound (free) T3, to assess thyroid function. Abnormal levels may indicate hyperthyroidism, hypothyroidism, goiter, or pituitary disorders. Doctors use this test to evaluate symptoms like fatigue, weight changes, anxiety, or irregular heartbeat and to monitor thyroid treatment. The T3 Total Test provides essential insight into metabolism, energy regulation, and overall endocrine health.
The T3 Reverse (rT3) Test measures reverse triiodothyronine, an inactive thyroid hormone, to assess thyroid and metabolic function. High rT3 may occur in hypothyroidism, chronic illness, stress, or during certain treatments, while low levels may reflect hormone imbalance. Doctors use this test along with TSH, Free T4, and Free T3 to evaluate fatigue, weight changes, or slow metabolism. The rT3 Test provides insight into thyroid regulation, energy balance, and endocrine health.
The Thyroid Peroxidase and Thyroglobulin Antibodies Test measures TPO and TgAb antibodies that target thyroid enzymes and proteins essential for hormone production. High levels are linked to autoimmune thyroid disorders such as Hashimoto’s thyroiditis and Graves’ disease. Doctors order this test to evaluate fatigue, weight changes, neck swelling, or irregular heartbeat and to confirm thyroid autoimmunity. It provides vital insight into thyroid function and endocrine health.
The Thyroid Stimulating Immunoglobulin (TSI) Test detects antibodies that stimulate the thyroid gland, often causing hyperthyroidism and Graves’ disease. High TSI levels may lead to symptoms such as weight loss, rapid heartbeat, or eye problems. Doctors order this test to confirm Graves’ disease, monitor treatment, or assess relapse risk. Results provide essential insight into autoimmune thyroid disorders and guide personalized management strategies.