The OS Test

The OS Test

Reactive Leg Reflex® test indicating a "no" response
OS test indicating even legs or  a “no there” response

In the 1920’s, Early technique prioneers discovered and perfected a procedure which allows a practitioner to gather objective, real-time information from a client’s body. This means it had become possible to use the patient’s own body as an instrument to find exactly where, when and how to adjust/correct stored injury, trauma, and accumulated life stress.

Leg Length Test

The OS Test has advantages over other types of client sourced diagnostic bio-feedback. It is objective on the part of the observer (practitioner). The response can be simply observed essentially as either a definitive Yes, or a definitive No. From the client’s perspective, there is no active resisting as in traditional active muscle testing procedures. When the OS Test is performed, the client is in a passive state, just relaxed. The test response feels the same to the client if the testing answer is a Yes or No.

This situation allows incredibly detailed information to be gathered as to exactly how injury, trauma and accumulated lift stress is stored in the client’s system.

Get Gentle Chiropractic Treatments

Reactive Leg Reflex® test indicating a "yes" response.
OS Test indicating a short leg or “yes there” response.

For more information on if this work could help you, a family member, friend or someone you know, contact Dr Jonathan Leusden,

Book an Appointment today for a free initial consultation.


Dr. Leusden. I am a chiro student exploring different techniques. I’m drawn to low force chiro as my first and most profound chiro experience was with a DNFT doc. How does your technique differ from DNFT? Thanks!

Hey Greg! Glad you contacted me. That’s great you’re interested in DNFT and similar techniques. Patients love it and feel compelled to tell their friends. OST is a very modern version of the gentle force techniques within chiropractic. OST analysis has been simplified and made massively more efficient. Let me know if you want coupon code to learn OST. You can get the big idea through my online course. It’ll make you completely fluent in the subluxation complex.


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