ANS cardiac & autonomic testing
Your autonomic nervous system runs the things you never think about — heart rate, blood pressure, the shift between stress and rest. When it is struggling, you feel it as fatigue, dizziness, and a racing heart, even when a standard exam looks normal. ANS testing in our Lakeville clinic is a window into how your heart and nervous system are actually coping.
How your body handles the invisible work
ANS (autonomic nervous system) testing measures the balance between the systems that speed you up and the ones that calm you down. It is a comfortable, non-invasive session — you rest while the sensors work — and it often surfaces the missing piece behind symptoms other tests miss.
- Heart rate variability (HRV) — the subtle beat-to-beat variation that reflects how adaptable and resilient your nervous system is.
- Stress response — how your body shifts into and out of stress, and whether it is stuck in one gear.
- Autonomic balance — the push-and-pull between “fight or flight” and “rest and digest,” measured rather than assumed.
You rest; the sensors work
When racing heart and dizziness show up as measurements instead of complaints, the conversation changes — and a real plan can start. ANS testing is often the cornerstone of a POTS evaluation, and a valuable piece of any fatigue workup.
“As a 61-year-old male who frequently travels internationally, maintaining optimal health is paramount to me. Ellen introduced me to the ANS, which revealed crucial insights not captured in my previous physicals.”
— Tim R.Academic-center-grade testing, close to home
Advanced autonomic and cardiovascular testing of this kind is usually associated with large academic medical centers — where appointments often book out months ahead. At E. Michael Health, the same class of objective testing is here in Lakeville, and you can typically be seen within days, not months.
Insight into how your heart, vessels, and nervous system are coping — without the wait.
When the numbers finally match how you feel
POTS & dizziness
The measurement at the center of a POTS evaluation — racing heart and lightheadedness, quantified.
Unexplained fatigue
When exhaustion doesn’t match your day, autonomic function is often the overlooked contributor.
Men’s & women’s health
Autonomic and vascular signals matter for everyone — part of how we work up low energy, low T, and hormone change alike.
Complex chronic illness
Paired with WAVi and comprehensive labs when fatigue, brain fog, and a miswired nervous system show up together.
Measurable answers, from every angle
WAVi brain assessment
An objective EEG, processing-speed (P300), and reaction-time baseline for focus and brain fog. Explore WAVi
All advanced testing
Comprehensive blood panels, iron studies, and toxicity screening — the engine of everything we do. Explore testing
Conditions we focus on
Lyme, POTS, MCAS, hormones, iron deficiency, and more — see how testing anchors each. Explore conditions