It is very common for practitioners of many "alternative" healing modalities to claim that the energy, vibrations, or "auras" they manipulate cannot be detected by modern science. Statements like this show a depressingly weak understanding of what we already know and what we are capable of measuring. The electromagnetic spectrum has been well known for over a century, and there are not any gaps in our understanding of it (there is no room for new unknown wavelengths or particles in the range of energy that exists in living bodies). We know in great detail how nerves, muscles and other tissues create and utilize energy, both chemical and electric and are continuously learning more details, none of which suggest any new, unknown mysterious force.
Our ability to measure incredibly small amounts of electromagnetic energy has also improved past the point that the discovery of some new unknown energy or vibration having a physiologic effect is vanishingly small. We can detect light and other wavelengths that have traveled for billions of years across the universe. We can also detect the light emitted by chemical reactions in human bodies. To get these types of images requires cameras that can detect light one photon at a time. Very weak signals in all other wavelengths (radio through gamma) can also be detected.
This understanding of the electromagnetic spectrum combined with extremely sensitive detectors makes the likelihood of discovering some new type of energy affecting bodies vanishingly small. Claims by CAM practitioners that science cannot measure what they do reflect either a profound ignorance on their part or a criminal disdain for the intellect of their customers.
An interesting exercise when confronting quacks is to ask how whatever they do works. If you get vague answers, keep asking questions. Often you will find that their ultimate answer is that it cannot be measured by science. This is a strong indication that their claims are unsupported by the evidence, and are not worth risking your money or your health (or your animals health).