What is the NASA 10-Minute Lean Test?

The NASA 10-Minute Lean Test is an evidence-based clinical screening tool developed by NASA and adapted by Johns Hopkins University to evaluate orthostatic intolerance, Postural Orthostatic Tachycardia Syndrome (POTS), and Neurally Mediated Hypotension (NMH) in ME/CFS and Long COVID patients.

How do I interpret my NASA Lean Test results for POTS?

A sustained heart rate increase of 30 beats per minute (BPM) or more (or reaching 120 BPM) within 10 minutes of quiet standing, in the absence of significant orthostatic hypotension (a drop >20/10 mmHg), satisfies the diagnostic criteria for POTS.

Is the NASA Lean Test as accurate as a Tilt Table Test?

Yes. Published research demonstrates that a passive 10-minute lean test with heels 6 to 8 inches from a wall has comparable sensitivity to formal tilt table testing for diagnosing orthostatic tachycardia, while eliminating the muscle-pump artifact of active standing.

Objective Autonomic Assessment Validated Protocol Updated October 2026

NASA 10-Minute Lean Test: Interactive Timer & POTS Diagnostic Tool

Orthostatic Intolerance (OI)—the inability to maintain upright posture without debilitating neurological and cardiovascular symptoms—affects an estimated 80% to 95% of individuals with ME/CFS and post-COVID dysautonomia. The NASA 10-Minute Lean Test is a validated, office- and home-based protocol designed to objectively document Postural Orthostatic Tachycardia Syndrome (POTS) and Orthostatic Hypotension without requiring specialized tilt table equipment.

AUTONOMIC HEMODYNAMIC MONITOR

PROTOCOL STANDBY

Phase 1: Supine Rest (5m) Phase 2: Standing Lean (10m) Complete

00:00

Target: 5 minutes resting supine baseline prior to standing.

Instructions: Lie completely flat on your back in a quiet room. Rest silently for 5 minutes. At the 5-minute chime, record your resting baseline heart rate and blood pressure, then stand up with your heels 6–8 inches from the wall.

Protocol Vitals Data Entry Oscillometric Arm Cuff Measurements

Demo Presets:

1. Supine Rest

5-Min Baseline

Heart Rate

BPM

Blood Pressure

mmHg

2. Standing Lean

Minute 2

Heart Rate

BPM

Blood Pressure

mmHg

3. Standing Lean

Minute 5

Heart Rate

BPM

Blood Pressure

mmHg

4. Standing Lean

Minute 10 (Final)

Heart Rate

BPM

Blood Pressure

mmHg

Diagnostic Criteria Explained

Condition	Diagnostic Criterion (NASA Lean / Tilt)	Underlying Pathophysiology
Postural Orthostatic Tachycardia (POTS)	Sustained heart rate increase ≥ 30 BPM (or ≥ 40 BPM in adolescents) or absolute standing HR ≥ 120 BPM without classical hypotension.	Defective lower extremity vasoconstriction leading to splanchnic blood pooling; compensatory adrenergic surge.
Orthostatic Hypotension (OH)	Sustained drop in systolic blood pressure ≥ 20 mmHg or diastolic ≥ 10 mmHg within first 3 minutes.	Autonomic failure of sympathetic baroreflex mechanisms to increase peripheral vascular resistance.
Neurally Mediated Hypotension (NMH)	Delayed, sudden drop in blood pressure accompanied by bradycardia or presyncope after prolonged upright posture.	Paradoxical vasovagal reflex triggered by vigorous left ventricular contraction around an under-filled chamber.

Sharing Your Findings with Your Physician

General practitioners frequently lack training in recognizing orthostatic intolerance, mistaking postural tachycardia for generalized anxiety. Presenting an objective, standardized NASA Lean Test chart provides concrete, clinical evidence that justifies referrals for autonomic testing, echocardiograms, and targeted pharmacotherapies (such as fludrocortisone, midodrine, or ivabradine).

Next Steps & Clinical Differential Diagnostics

10-Minute Active Stand Test (Poor Man's Tilt Table Test): Perform the unsupported standing test protocol with automated interval vitals logger, delta calculation, and physician EHR report.
POTS Subtype Classification Calculator: Stratify your orthostatic response into Hyperadrenergic, Neuropathic, or Hypovolemic POTS.
Spinal CSF Leak vs. POTS Differential & Stanford 48-Hour Flat Test: Severe positional headaches with tachycardia may indicate an underlying dural tear rather than primary autonomic dysfunction.
9-Point Beighton Hypermobility Score Calculator: Screen for hypermobile Ehlers-Danlos syndrome (hEDS), which accounts for impaired venous tone in many orthostatic intolerance patients.

Peer-Reviewed References & Scientific Literature

Rowe, P. C., et al. (2014). Orthostatic intolerance in chronic fatigue syndrome. The Journal of Pediatrics, 165(3), 427–435. PMID: 24948346
Bateman, L., et al. (2021). Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: Essentials of Diagnosis and Management. Mayo Clinic Proceedings, 96(11), 2861–2878. PMID: 34454716
Raj, S. R. (2013). Postural tachycardia syndrome (POTS). Circulation, 127(23), 2336–2342. PMID: 23679948