The pathway this screening tests. When NO production drops, vessel dilation fails and blood flow declines.
After 35, your body produces less Nitric Oxide every year. The bedroom is where you notice it first. But the same vascular dysfunction is behind the brain fog, the fatigue, and the blood pressure that creeps up without explanation. This 30-day screening tests all of it.
Start the Safety Screening
The pathway this screening tests. When NO production drops, vessel dilation fails and blood flow declines.
Erectile function requires blood flow. Blood flow requires Nitric Oxide. When NO production drops, sexual performance is the first thing to go.
Most men notice it as a gradual decline in erection quality. Morning wood fades. Recovery takes longer. Performance becomes inconsistent. The instinct is to treat it as a standalone issue, but declining erectile function is a vascular signal, not a sexual one.
The same NO suppression driving that decline is behind the afternoon crash that coffee stopped fixing, the blood pressure that crept up without explanation, and the mental sharpness that used to be automatic. These look like separate problems. They share a single vascular origin.
Standard blood panels count what floats in your bloodstream. They say nothing about vessel wall function, glycocalyx integrity, or your body's capacity to produce Nitric Oxide.
The result: high-performing men spending thousands on TRT, PDE5 inhibitors, longevity clinics, and supplements without ever addressing the vascular layer underneath. Hormones and medications matter. But if the vessels that deliver oxygen and nutrients to every tissue are compromised, optimizing everything else is addressing symptoms downstream of the root cause.
We call this Vascular Resistance. It is measurable. It is addressable. And it is almost universally missed.
This is not the protocol. It is the first step of the diagnostic process. Five clinical compounds that test how your Nitric Oxide pathway responds under load.
The raw building block your body converts into Nitric Oxide. Provides the precursor that production depends on.
A plant-derived nitrate that feeds a secondary NO pathway, bypassing the primary enzymatic route.
Upregulates your body's NO-producing enzyme and helps protect existing Nitric Oxide from degradation.
Addresses arterial inflammation. This is the long game component of the diagnostic stack.
Supports vessel dilation and deep sleep architecture. Both directly affect vascular recovery.
Zone 2 cardio, sleep optimization, and one counterintuitive change to your morning routine that most people have never heard of.
The Vascular Health Diagnostic Kit — compounds, NO test strips, and protocol briefing shipped to your door.
A clear process from screening to assessment. You handle the protocol. We handle the data, the interpretation, and the accountability.
9 quick questions to confirm eligibility. Under 2 minutes.
Compounds, NO test strips, protocol briefing, and dosing schedule delivered to your door.
Take the stack. Text a photo of your NO strip each morning and rate energy and performance. 10 seconds.
Your NO levels and subjective scores visualized in real time on a private dashboard built for you.
Mid-point video review of your data. Where your NO is trending and whether the protocol needs adjustment.
Written assessment report + 15-minute call to discuss whether advanced labs are the right next step.
The 30-day screen gives us the first real data point about your vascular health. Either outcome moves you forward.
Sexual performance rebounds. Energy improves. Sleep deepens. That tells us your NO pathway was suppressed and the precursors helped. But it does not tell us why it was suppressed. That requires labs. The response confirms the vascular hypothesis and makes the case for a calibrated protocol built on blood work.
That tells us your Vascular Resistance is being driven by something upstream: methylation dysfunction, chronic inflammation, cortisol, heavy metals, or another root cause that a screening stack cannot reach. That also requires labs. The non-response narrows the diagnostic window and tells us exactly where to look next.
The screening is a 30-day compound regimen that tests how your Nitric Oxide pathway responds under load. Five clinical compounds target the NO pathway from multiple angles. You also receive salivary NO test strips to track your response daily, a personalized dashboard that visualizes your data in real time, a Day 15 mid-point video audit, and a Day 30 assessment report with a review call.
No. GRN Labs is a wellness and optimization coaching service. The screening uses professional-grade supplements, not prescription medications. We do not diagnose, treat, or prescribe. An Advisory Medical Director reviews all results before any full protocol recommendation.
On Day 30, you receive a written assessment report reviewing your dashboard data and 30-day trends, followed by a 15-minute call to discuss findings and whether advanced labs are the right next step. If your pathway responded, we know suppression was present. If it did not, we know the resistance is upstream. Either way, the screen narrows the diagnostic window and provides a clear next step.
Anyone currently taking nitrate medications (nitroglycerin, isosorbide), blood thinners (warfarin, Eliquis), immunosuppressant medications, or who has had a cardiac event or procedure in the past 12 months should consult their cardiologist before participating. Anyone under active care for a heart condition should also consult their physician first. Our intake form includes safety screening questions to confirm eligibility.
Many of our clients work with other providers. This screening fills a specific gap: testing the vascular and Nitric Oxide layer that most concierge practices and longevity clinics do not include. It is designed to complement your existing care, not replace it.
Answer 9 quick questions to confirm eligibility. Takes under 2 minutes.