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Same labs (Quest, Labcorp, or BioReference). Same accuracy. The differences are speed, price, and what gets ordered. Doctor-ordered fatigue workups vary widely — some doctors run TSH only, others run a CBC, very few run all seven of these markers together because of insurance reimbursement friction. This panel is what a thorough fatigue workup looks like: thyroid (TSH + Free T4), full iron status (iron + TIBC + ferritin), vitamin D, B12, A1c, and CBC. Results land in 2-5 days. You can absolutely share the results with your doctor — many of our customers do, and it gives the doctor a complete dataset to work from.

Two reasons. First, 'normal range' is wider than 'optimal' — values in the lower third of normal for ferritin, B12, vitamin D, or Free T4 commonly cause symptoms even though they don't get flagged. Second, most basic workups don't include ALL of these markers — TSH alone misses Free T4 problems, a CBC alone misses ferritin, and most insurance-billed panels skip vitamin D unless specifically requested. The Energy & Fatigue Panel covers the full set so nothing gets overlooked.

Fasting for 8-12 hours is recommended for accurate iron results. Water is okay during the fast. Morning draws (7-10 AM) are preferred because TSH and cortisol follow a circadian rhythm and read more reliably in the morning. If you take biotin supplements, stop them 72 hours before the draw — biotin interferes with several thyroid assays. Take any prescription medications as usual unless your doctor told you otherwise.

1) A licensed physician reviews and approves your order (usually within minutes). 2) We email you a digital lab requisition. 3) Walk into any Quest, Labcorp, or BioReference location — no appointment needed at most. 4) Get your results in 2-5 business days via your secure TestWell account. If anything looks off, the report includes reference ranges so you know what to discuss with your doctor.

Your results will flag any value outside the reference range with a color indicator. Take the report to your doctor (primary care, an endocrinologist for thyroid issues, or a functional medicine practitioner) — they can help interpret what the pattern means and recommend next steps. Common abnormal patterns are very treatable: low ferritin responds to iron supplementation, low vitamin D responds to D3 supplementation, mild thyroid dysfunction may need medication or just monitoring depending on the values. The panel is designed to give you a complete dataset; what to do with it is a conversation with your doctor.

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.