The 3 Tests

Three FDA-cleared tests. One 15-minute screening.

ABI, ANS, and Sudomotor — a complete cardiovascular signal captured in a single non-invasive office visit and reimbursed by Medicare and most private insurers.

The Protocol

ABI
93923

ANS
95921

Sudomotor
95923

Follow-up
99214

What we measure

A complete cardiovascular signal — head to toe.

Most PAD screening looks at one signal in one place. Our protocol captures three — vascular flow, autonomic balance, and small-fiber nerve function — and reads them against each other.

The result is a clinical picture no single test can produce, surfaced in a single 15-minute office visit.

Vascular blood flow (ABI)
Autonomic nervous system balance
Small-fiber neuropathy (sudomotor)

Vascular system diagram with waveform analysis

Full-body vascular and autonomic signal capture across the 3-test protocol.

CPT 95923

Sudomotor

Measures sweat-gland function as an early indicator of small-fiber neuropathy and autonomic dysfunction — often the first sign of diabetic or vascular damage.

Detects small-fiber neuropathy 10+ years earlier
Non-invasive, no needles, no preparation
Strong predictor of cardiovascular events

CPT 95921

Autonomic Nervous System (ANS)

Evaluates heart-rate variability and parasympathetic balance — a validated marker for cardiovascular risk, diabetic autonomic neuropathy, and silent ischemia.

Identifies silent cardiac autonomic dysfunction
AHA & ADA recognized assessment
Guides risk stratification and treatment

CPT 93923

Ankle-Brachial Index (ABI)

The gold-standard non-invasive PAD test. Compares blood pressure at the ankle to the brachial artery to detect arterial blockages in the lower extremities.

Direct PAD diagnostic — sensitive and specific
Recommended by AHA for at-risk populations
Predicts heart attack and stroke risk

CPT 99214

Follow-Up Visit

Detected patients return for a level-4 office visit so the provider can interpret findings, document risk, and place orders — captured under standard E/M billing.

Recurring follow-up revenue stream
Documents medical necessity for downstream care
Drives cardiology, vascular, endocrine referrals

15 Minutes · Non-Invasive

Three pillars of cardiovascular risk. One visit.

PAD doesn't show up alone. The 3-test protocol captures vascular, autonomic, and small-fiber signals simultaneously — giving providers a complete cardiovascular risk picture in a single patient visit.