If you have searched whether Nutrition Response Testing is legitimate, you have probably found two kinds of answer: practices that describe it as transformative, and critics who dismiss it outright. Neither is much use when you are simply deciding whether to book an appointment.
Here is a straighter answer, including the parts that do not flatter the method.
The short answer
Nutrition Response Testing is a real, structured assessment method that trained practitioners use to build a personalised whole-food supplement plan. It is not a laboratory test, it does not diagnose disease, and it does not produce the kind of measurable result that blood work does. Whether you consider it legitimate depends almost entirely on what you expect it to do.
Expect a nutritional assessment and a supplement plan that gets reviewed over time, and the method is doing what it claims. Expect a diagnosis, and you are asking it for something it was never designed to give.
What actually happens
The mechanics are not mysterious. A practitioner takes a full health history, applies light physical contact and observes how your body's neurological reflexes respond, then uses that alongside the conversation to build a whole-food supplement plan that is reviewed and adjusted at follow-up visits. We walk through the process step by step in our plain-English guide to Nutrition Response Testing.
Nothing is injected, drawn, or swallowed as part of the assessment. You stay fully clothed. A first session usually runs 45 to 60 minutes, because most of it is conversation.
What it cannot do
- It is not a diagnostic test. It does not identify disease, and it is not a substitute for blood work, imaging, or anything your physician orders.
- It is not a replacement for medical care. If you are being treated for a condition, Nutrition Response Testing sits alongside that care rather than instead of it.
- It is not a reason to change prescribed medication. That decision belongs to the physician who prescribed it.
Any practitioner who tells you otherwise is claiming something the method does not support.
Why the question comes up at all
The honest reason people ask is that it does not look like a medical test. There is no needle, no sample, and no printout with numbers on it. That is a fair thing to notice, and it is worth asking about rather than ignoring.
It also helps to separate two different questions. “Is this a medical diagnostic?” has a clear answer: no, and no careful practitioner claims otherwise. “Is a structured nutritional assessment with follow-up worth my time?” is a judgement call, and reasonable people land differently on it.
How to judge a practitioner
This matters more than the method itself. Two questions tell you a great deal: how long have you used this method, and how do you decide when to refer a patient to a physician? Someone who cannot answer the second one clearly is the problem, whatever method they use.
Walk away if you are told to stop a prescribed medication, given a disease diagnosis on the basis of the assessment, sold a large fixed package of supplements with no follow-up built in, or promised a specific result by a specific date.
How we approach it
Dr. Adam Propper has practised nutritional testing for around thirty years, the most recent decade of it using Nutrition Response Testing, at a practice established in 1989. Plans are built around Standard Process whole-food supplements, which are available through healthcare practitioners rather than off a shop shelf, and they are reassessed as you change.
If something in your history suggests a medical investigation is needed, the right answer is a referral to your physician, not a supplement.
Consultations are available by telehealth across Connecticut.
The bottom line
If you want a nutritional assessment and a supplement plan that someone reviews with you over time, and you understand that it is not a medical test, Nutrition Response Testing is a reasonable thing to try. If what you actually need is a diagnosis, you need your physician — and a careful practitioner will tell you the same.
The practical details — what a plan involves and how to book — are on our Nutrition Response Testing page. Or contact us and call (203) 226-1047 to ask before you book anything.
Common questions
Is Nutrition Response Testing a medical test?
No. It is a nutritional assessment method, not a medical or laboratory test. It does not diagnose disease and it is not a substitute for blood work, imaging, or any assessment your physician orders.
Does Nutrition Response Testing diagnose disease?
No. If something in your history suggests a medical investigation is needed, the right response is a referral to your physician rather than a supplement plan.
Can I have Nutrition Response Testing while taking prescribed medication?
Nutrition Response Testing is not a reason to change or stop a prescribed medication — that decision belongs to the physician who prescribed it. Tell your practitioner what you are taking so your plan accounts for it.
How long does a first session take?
Usually 45 to 60 minutes, because most of it is conversation about your history, diet and symptoms. Follow-up sessions are shorter, typically 20 to 30 minutes.
Is Nutrition Response Testing available across Connecticut?
Yes. Consultations are available by telehealth across Connecticut.