FAQ Sheet Herbal Crystallization Analysis By Ellen Coleman, RD, MA, MPH This test is done by adding a solution of copper chloride to a dried specimen of the patient's saliva on a slide. If, for example, two parallel lines are noticed, they can be interpreted as representing a blood vessel. This represents an application of the Doctrine of Signatures . The procedure and the theory behind it do not have the slightest validity.
Charlatans make faulty diagnoses so that they can profit off the sale of tests or supplements.
Patients should not buy supplements from the person that recommends them. Otherwise, there is a conflict of interest.