🦋 Thyroid Deep Dive

For everyone · 8 markers · $185.40 with code CAMERON $206.00

Fatigue, cold intolerance, weight change, hair loss, constipation, low mood, or a 'normal TSH' that never explained how you feel. Women are 5–8x more likely to be affected.

🩸 Order this exact panel — 10% off

All 8 markers load into your cart in one click. No doctor's visit, drawn at any Quest location in the US, results by email in about two weeks. Code CAMERON applies automatically.

Add all 8 markers — $185.40 → Open the full Bloodwork Vault →

Why this panel

TSH alone is a screening test, not a thyroid workup. It tells you what your pituitary thinks — not how much active hormone reaches your tissues. This panel measures the actual hormones, the conversion step, the antibodies, and the nutrients thyroid function depends on.

💡 What most people missAntibodies can precede dysfunction by years. You can have positive TPO antibodies with a perfectly normal TSH and still feel awful — and that finding changes what you do about it. Separately, T4→T3 conversion is where a lot of people fail: normal TSH, normal FT4, low FT3 and high reverse T3 is a real pattern that TSH-only testing renders invisible. Low ferritin and selenium both impair conversion, which is why they're on this panel.
⏰ When to get it drawnMorning, before any thyroid medication. Stop biotin 48–72 hours beforehand — biotin causes falsely low TSH and falsely high FT4 on most immunoassays and is a leading cause of misdiagnosis.

The 8 markers — and why each one is here

TSH (Thyroid-Stimulating Hormone) $9.00
The screen — necessary but nowhere near sufficient
Free T4 (Free Thyroxine) $13.00
The storage hormone your body actually makes
Free T3 (Free Triiodothyronine) $20.00
The active hormone. This is the one that does the work
Reverse T3 $45.00
The brake. High rT3 means T4 is being shunted away from activation
Thyroid Antibodies (TPO + TgAb) $40.00
Hashimoto's — can precede abnormal TSH by years
Ferritin $9.00
Iron deficiency directly impairs T4→T3 conversion
Selenium, Blood $50.00
The deiodinase enzymes that convert T4→T3 are selenium-dependent
Vitamin D (25-Hydroxy) $20.00
Strongly associated with autoimmune thyroid disease
✓ How to read the resultsHashimoto's: positive TPO and/or TgAb, TSH creeping up. Poor conversion: normal TSH and FT4 with low FT3 and high rT3 — look at ferritin, selenium and calorie intake. Central hypothyroid (rare, serious): low TSH and low FT4 together.
🔒 The Thyroid Deep Dive protocol is inside the Academy

Ordering the panel tells you your numbers. The protocol tells you what to do with them — why TSH alone misses the conversion step, how to read free T3 against reverse T3, what the subclinical treatment trials actually found, and the biotin interference that fakes Graves' disease on a lab report.

Join the Academy — $10/mo →

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Frequently asked questions

What blood tests are in the Thyroid Deep Dive panel?

8 markers: TSH (Thyroid-Stimulating Hormone), Free T4 (Free Thyroxine), Free T3 (Free Triiodothyronine), Reverse T3, Thyroid Antibodies (TPO + TgAb), Ferritin, Selenium, Blood, Vitamin D (25-Hydroxy).

How much does the Thyroid Deep Dive panel cost?

$206.00 before discount, $185.40 with code CAMERON applied automatically. Individual markers add a one-time $10 draw fee. Ordered through Marek Diagnostics and drawn at any Quest Diagnostics location in the US.

Do I need a doctor's order for these tests?

No. These are ordered direct-to-consumer through Marek Diagnostics — you order online, walk into a Quest location, and results are emailed to you in about two weeks. No physician visit or insurance required. Not available in NY, NJ or RI.

When should I get the Thyroid Deep Dive panel drawn?

Morning, before any thyroid medication. Stop biotin 48–72 hours beforehand — biotin causes falsely low TSH and falsely high FT4 on most immunoassays and is a leading cause of misdiagnosis.

How do I interpret Thyroid Deep Dive results?

Hashimoto's: positive TPO and/or TgAb, TSH creeping up. Poor conversion: normal TSH and FT4 with low FT3 and high rT3 — look at ferritin, selenium and calorie intake. Central hypothyroid (rare, serious): low TSH and low FT4 together.

Important: This page is education only, not medical advice and not a diagnosis. A panel is a starting point for a conversation with a clinician, not a substitute for one. Reference ranges vary by laboratory and assay — always compare against the range printed on your own report.