🛡️ Frequent Illness & Immune Resilience

For everyone · 8 markers · $97.65 with code CAMERON $108.50

Catching everything going round, infections that drag on for weeks, wounds or mouth ulcers that heal slowly, or cold sores that keep recurring.

🩸 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 — $97.65 → Open the full Bloodwork Vault →

Why this panel

Most people who get sick constantly don't have a broken immune system — they have one or two correctable deficiencies, an untreated metabolic problem, or they're simply run down. This panel checks the fixable causes and screens the blood counts that would suggest something more serious.

💡 What most people missVitamin D and zinc are the two that actually turn up, and poorly controlled blood sugar is the one nobody expects. Raised glucose impairs neutrophil function measurably — which is why recurrent skin infections, thrush and slow wound healing are sometimes the first sign of undiagnosed diabetes. The other thing worth knowing is the neutrophil-to-lymphocyte ratio on your CBC: it's a cheap, underused marker of overall immune and inflammatory stress that most people never have explained to them.
⏰ When to get it drawnFast 9–12 hours for the glucose. Wait at least 2–3 weeks after an infection — testing while you're actively unwell gives you the picture of being ill, not your baseline.

The 8 markers — and why each one is here

Complete Blood Count (CBC) w/ Differential $9.00
White cell lines and the neutrophil-to-lymphocyte ratio — the core immune screen
Vitamin D (25-Hydroxy) $20.00
The deficiency most consistently linked to respiratory infection risk
Zinc, Plasma $20.00
Genuine deficiency impairs immune function and slows wound healing
HbA1c (Hemoglobin A1c) $9.00
Raised glucose measurably impairs neutrophil function — the unexpected one
Ferritin $9.00
Iron deficiency impairs immunity well before it causes anaemia
hs-CRP (C-Reactive Protein, High Sensitivity) $18.50
Ongoing inflammation suggests something specific rather than 'run down'
ESR (Sed Rate, Westergren) $14.00
Persistently raised without a cause needs investigating
Comprehensive Metabolic Panel (CMP) $9.00
Liver, kidney and protein status all affect immune competence
✓ How to read the resultsLow vitamin D or zinc → correct and reassess, these are the common wins. Raised HbA1c → glucose control is impairing your immune function. Low ferritin → iron deficiency impairs immunity independently of anaemia. Persistently low white cells or lymphocytes, or an unexplained raised ESR, needs a doctor rather than a supplement.
🔒 The Frequent Illness protocol is inside the Academy

Ordering the panel tells you your numbers. The protocol tells you what to do with them — why recurrent infection is usually an under-resourced immune system rather than a broken one, the HbA1c finding that catches undiagnosed diabetes, and the free globulin check hiding on your CMP.

Join the Academy — $10/mo →

Related panels

Frequently asked questions

What blood tests are in the Frequent Illness & Immune Resilience panel?

8 markers: Complete Blood Count (CBC) w/ Differential, Vitamin D (25-Hydroxy), Zinc, Plasma, HbA1c (Hemoglobin A1c), Ferritin, hs-CRP (C-Reactive Protein, High Sensitivity), ESR (Sed Rate, Westergren), Comprehensive Metabolic Panel (CMP).

How much does the Frequent Illness & Immune Resilience panel cost?

$108.50 before discount, $97.65 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 Frequent Illness & Immune Resilience panel drawn?

Fast 9–12 hours for the glucose. Wait at least 2–3 weeks after an infection — testing while you're actively unwell gives you the picture of being ill, not your baseline.

How do I interpret Frequent Illness & Immune Resilience results?

Low vitamin D or zinc → correct and reassess, these are the common wins. Raised HbA1c → glucose control is impairing your immune function. Low ferritin → iron deficiency impairs immunity independently of anaemia. Persistently low white cells or lymphocytes, or an unexplained raised ESR, needs a doctor rather than a supplement.

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.