The Decline Starts in the Bedroom. The Cause Lives in Your Blood Vessels.

Erectile function is the first thing to go when Nitric Oxide drops. But the same vascular dysfunction is behind the brain fog, the fatigue, and the blood pressure standard labs cannot explain. We test the markers that reveal why, then build a 12-week protocol to address it.

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10 Advanced Biomarkers MD-Reviewed Labs Mobile Phlebotomy 90-Day Protocol
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What Your Annual Physical Actually Measures

A standard lipid panel measures cholesterol concentrations in the blood. It does not measure the condition of the blood vessels themselves.

Every year, millions of men hear the same reassurance from their physicians: "Your numbers look good." But the numbers they check do not tell the full story. Many of these men are already noticing changes in the bedroom. Erection quality declining. Morning wood fading. Recovery taking longer than it used to. Then comes the afternoon energy crash, the mental fog that caffeine no longer fixes, and the blood pressure that starts creeping upward without any clear cause.

Most attribute it to stress, or age, or travel. Their doctor agrees because the standard panel came back clean. No further testing recommended.

65-75%
of baseline cardiovascular risk remains unaddressed after statin therapy, according to a 2023 Lancet analysis of over 31,000 patients.

The issue is measurement scope. A lipid panel measures what floats in the bloodstream. It tells you nothing about the vessel walls themselves. A patient can hit every cholesterol target and still have significant dysfunction in the arterial lining, simply because the lining was never examined.

The markers that assess vessel wall integrity, nitric oxide production, and vascular inflammation exist. They are validated by published research. But fewer than 1% of physicians order them on a routine basis.

Sexual performance, brain fog, and chronic fatigue often share a single vascular origin. When Nitric Oxide production declines, blood flow to high-demand organs drops with it. The bedroom and the brain are the most sensitive to reduced perfusion, which is why these symptoms tend to cluster together, even when lab work looks "normal."

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The GRN Vascular Review

A four-phase process designed to measure what standard panels miss, then support restoration over 90 days.

1
Vascular Audit
Mobile phlebotomy at your home or office. We draw 10 biomarkers your doctor has likely never ordered. An Advisory Medical Director reviews every result before anything ships.
2
Custom Protocol
Based on your lab results, we build a targeted 12-week supplement protocol. Pre-packed daily sachets (AM and PM) ship to your door. No bottle management.
3
Active Monitoring
Blood pressure cuff and smart ring tracking. Daily SMS micro-check-ins. Bi-weekly data reviews. Midpoint assessment and recalibration call at Day 45.
4
Re-Test & Verdict
Full re-test of all 10 biomarkers at Day 90. Side-by-side comparison of baseline vs. endpoint. Verdict call with your results and forward plan.
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Built for High-Performing Men Who Want Data, Not Guesswork

This protocol is designed for executives and senior professionals who are used to measuring what matters in every other area of their lives.

Noticed the bedroom changed first

Erection quality is not what it was. Morning wood faded. Recovery takes longer. You may have tried a PDE-5 inhibitor, but something tells you the pill is masking a deeper problem, not solving it.

Told "you're fine" despite obvious decline

Your annual physical came back clean. But you know something changed. Focus is not what it was. Energy drops earlier. Your doctor has no explanation because the right markers were never tested.

Already investing in optimization

You may have explored TRT, longevity clinics, or concierge medicine. Some of it helped. But none of it addressed the vascular layer, the part of your biology that determines how well every organ gets supplied with blood.

Looking for root-cause solutions

Pills that mask symptoms are a temporary fix. You want to understand why your performance declined and address the underlying mechanism. You want to own the result, not rent it.

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The 10-Marker Expanded Insider Panel

These markers reveal what LDL alone does not. They measure the condition of the vessel, the function of the endothelium, and the systems that degrade before plaques form.

ADMA

Blocks nitric oxide production. When elevated, your body cannot produce enough NO to keep vessels open. Fewer than 1% of doctors order this test.

ApoB

Counts harmful lipoprotein particles. Particle count predicts plaque formation more accurately than cholesterol content alone.

Homocysteine

An amino acid that directly damages the vessel lining when elevated. High homocysteine accelerates vascular aging.

hs-CRP

Quantifies systemic inflammation. A strong predictor of cardiovascular events in patients with controlled LDL.

Fasting Insulin + Glucose

Detects insulin resistance before it shows on standard metabolic panels. Insulin resistance drives endothelial damage.

Total & Free Testosterone

Maps hormonal status alongside vascular markers. Low T often coexists with vascular dysfunction but is rarely tested in that context.

TSH + Free T3

Thyroid output directly affects vascular tone and metabolic rate. Subclinical thyroid dysfunction drives fatigue and brain fog.

Vitamin D

Regulates endothelial repair pathways. Deficiency correlates with increased cardiovascular risk and impaired recovery.

Cortisol

Chronic elevation degrades the glycocalyx and suppresses nitric oxide production. Tracks the vascular cost of sustained stress.

Comprehensive Metabolic Panel

Baseline organ function: liver, kidney, electrolytes. Confirms metabolic foundation before protocol customization.

Standard lipid panels typically measure 4 values. Our panel measures the markers that research connects to early vascular dysfunction.

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The Structure Your Doctor Never Tests

The initiating event happens years before calcified plaque ever shows up on a scan.

The endothelial glycocalyx is a microscopic gel-like layer that coats the inside of every blood vessel. Its cumulative surface area spans roughly 3,000 square meters across the vascular tree. Most physicians never evaluate it.

This structure controls what passes through the vessel wall, senses blood flow, and triggers nitric oxide production. When it degrades, LDL particles penetrate the vessel wall, nitric oxide drops, inflammatory cells accumulate, and the cascade toward plaque formation begins.

The sequence is specific: glycocalyx degrades first, endothelial dysfunction follows, then structural arterial disease develops. A 2018 study found that older adults had 33% lower glycocalyx thickness compared to younger participants. This degradation is measurable years before imaging or standard biomarkers detect disease.

Read the full Vascular Asset Report →
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Designed for Executives, Not Waiting Rooms

Every element of this protocol is built around your schedule. No clinic visits. No bottle management. No guesswork.

Mobile Phlebotomy

A certified phlebotomist comes to your home or office. Blood draw takes under 15 minutes. Same-day transport to our partner laboratory. No scheduling around clinic hours.

Pre-Packed Daily Sachets

AM (green) and PM (blue) sachets ship to your door. Each sachet contains your full daily protocol. Tear open, take with water. No counting pills from 8 different bottles.

Continuous Tracking

Blood pressure cuff and smart ring capture daily data. SMS micro-check-ins confirm adherence. Bi-weekly data reviews keep the protocol on track through Day 90.

GRN Labs Protocol Kit - AM/PM sachets, smart ring, and blood pressure monitor

Daily sachets, wearable tracking, and blood pressure monitoring included with every protocol.

See How the Protocol Works
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Common Questions

We measure 10 advanced vascular biomarkers including ADMA (which tracks nitric oxide suppression), ApoB (particle count, not just cholesterol content), homocysteine, hs-CRP, and others. Fewer than 1% of physicians order these markers on a standard panel. Our Expanded Insider Panel evaluates the vessel wall itself, not just what flows through it.

The GRN Vascular Review is built for high-performing men, typically 35 to 55, who are experiencing brain fog, declining energy, or changes in sexual performance. Most have been told "everything looks normal" by their physician despite noticing clear decline. If you are already investing in health optimization and want a data-driven, root-cause approach, this protocol was designed for you.

GRN Labs is a wellness and optimization coaching service. We are not a medical clinic and do not diagnose, treat, or prescribe. We use third-party laboratories for testing and recommend professional-grade supplements. An Advisory Medical Director reviews all lab work and signs clearance before any protocol ships.

The core protocol runs 12 weeks. It begins with baseline lab work, includes a midpoint assessment at Day 45, and concludes with a full re-test of all 10 markers at Day 90. Ongoing support is available through a monthly retainer after the protocol period ends.

Many of our clients work with other providers. GRN Labs fills a specific gap: the vascular markers and glycocalyx-focused approach that most concierge practices and longevity clinics do not include in their panels. Our protocol is designed to complement your existing care, not replace it.

See What Your Doctor Missed

Watch the full presentation on how vascular dysfunction works, what we test, and how the 12-week protocol is designed to support restoration.

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