This certifies that the QXCI device and the FETAPHONE QX have passed medical effectiveness studies. Many of these studies have been published in peer reviewed medical journals such as the International Journal of the Medical Science of Homeopathy. Some of the institutes that have certified the efficacy are included in the following list:

This is the Quantum Xrroid certificate of the medical safety of the QXCI medical biofeedback and Evoked Potential Biofeedback device. This certifies that each device is tested to the standards of UL 544, CE, and Hungarian safety tests. The Hungarian government has certified this device with the Joint Ministry of Finance and Foreign Ministry Trade decree no.39/1976 PM-KKM,34/1991 PM-NGKM. This specifies compliance with international safety, customs export and import regulations. Making this device legal for import in the USA, Europe, Asia, Japan, China, Australia, Africa, South America and elsewhere. The device is certified safe and effective by the National Institute for Hospital and Medical Engineering of Hungary decree no. 14/1990 for qualifications of hospital and medical use. Device registered to Maitreya, and QX ltd by copyright and license.