🧠 Brain Fog & Cognition

For everyone · 12 markers · $233.06 with code CAMERON ~~$258.95~~

Word-finding difficulty, poor concentration, memory slips, mental fatigue — or a family history of dementia and a desire to act early.

🩸 Order this exact panel — 10% off

All 12 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 12 markers — $233.06 → Open the full Bloodwork Vault →

Why this panel

Cognitive symptoms have metabolic, nutritional, vascular and hormonal causes, and most of them are measurable. This panel covers the reversible ones and establishes the long-term risk picture.

💡 What most people missHomocysteine above 10 µmol/L is associated with accelerated brain atrophy, and it's correctable with inexpensive B vitamins. The VITACOG trial showed B-vitamin supplementation slowed atrophy in the brain regions affected by Alzheimer's — but specifically in people with elevated homocysteine, which is why measuring it first matters. Alongside that: insulin resistance in the brain is real — the association between metabolic dysfunction and cognitive decline is strong enough that some researchers describe Alzheimer's as 'type 3 diabetes'. Fasting insulin belongs on a cognitive panel and is essentially never on one.

⏰ When to get it drawnMorning, fasted 9–12 hours. Off biotin 72 hours.

What's inside

This panel covers 12 markers chosen for this specific situation. The full list, the clinical reasoning behind each marker, draw timing and how to interpret your results are available to Academy members.

🔒 Panel and protocol are inside the Academy

Every marker and why it's here — plus the full evidence-graded Brain Fog & Cognition protocol: the one question that separates brain fog from something more serious, the seven causes that explain almost every case, why the standard B12 test misses real deficiency, and an honest read on the nootropics including the one that failed a 3,000-person trial. $10/mo, cancel anytime.

Unlock the full panel →

A few of the markers — free to read

These explainers are free: what each one measures, the optimal range rather than just the lab range, and what actually moves it.

Vitamin B12 Homocysteine Methylmalonic Acid (MMA)Folate, Serum

Frequently asked questions

What blood tests are in the Brain Fog & Cognition panel?

12 markers: Homocysteine, Vitamin B12, Methylmalonic Acid (MMA), Folate, Serum, TSH (Thyroid-Stimulating Hormone), Free T3 (Free Triiodothyronine), Insulin (Fasting), HbA1c (Hemoglobin A1c), Ferritin, Vitamin D (25-Hydroxy), hs-CRP (C-Reactive Protein, High Sensitivity), Magnesium, RBC.

How much does the Brain Fog & Cognition panel cost?

$258.95 before discount, $233.06 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 Brain Fog & Cognition panel drawn?

Morning, fasted 9–12 hours. Off biotin 72 hours.

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.