'Bi-polar' is a general word trying to describe something but is a symptom of a cause. Muscle testing can look into dietary allergies along with a lot of other weaknesses in the body for example overactive thyroid etc that agitate 'bi-polar' or make those symptoms come out. I would suggest for you a five elements chinese accupuncturist and/or a somatic experiencing therapist to get to the root cause. I used to have deep depression and all sorts of mental/emotional struggles but do not anymore due to healing the root/ trauma that started it in the first place. Feel free to send me a personal message and I can explain some other options. Would love to help.