Neurotransmitter Testing

Gaba is the major inhibitory neurotransmitter found in the Central Nervous System. It is important for balancing excitatory action of other neurotransmitters. High levels of Gaba may be a result of excitatory overload, or a compensatory mechanism to balance the surplus excitatory neurotransmitter activity. These high levels result in a ‘calming’ action that may contribute to sluggish energy, feelings of sedation, and foggy thinking. Low Gaba levels are associated with dysregulation of the adrenal stress response. Without the inhibiting function of Gaba, impulsive behaviors are often poorly controlled, contributing to a range of anxious and/or reactive symptoms that extend from poor impulse control to seizure disorders. Alcohol as well as benzodiazepine drugs act on Gaba receptors and imitate the effects of Gaba. Though these substances don’t cause an increase in Gaba levels, understanding their mechanism can give us additional insight into the effects of Gaba.

Norepinephrine, also called noradrenaline, is an excitatory neurotransmitter produced in the Central Nervous System, as well as a stress hormone produced in the adrenal medulla. Norepinephrine is involved in a wide variety of actions including attention, focus, regulating heart rate, affecting blood flow, and suppressing inflammation. Involved in arousal, it prepares the body for action by relaying messages in the sympathetic nervous system as part of the autonomic nervous system’s fight-or-flight response. High levels of norepinephrine are often linked to anxiety, stress, elevated blood pressure, and hyperactivity, whereas low levels are associated with lack of energy, focus, and motivation.

Epinephrine, often better known as adrenaline, is synthesized from norepinephrine in both the Central Nervous System and the adrenal medulla. Much like norepinephrine, this excitatory neurotransmitter helps regulate muscle contraction, heart rate, glycogen breakdown, blood pressure and more, and is heavily involved in a stress response. Elevated levels of epinephrine are often associated with hyperactivity, ADHD, anxiety, sleep issues, and low adrenal function. Over time, chronic stress and stimulation can deplete epinephrine stores leading to difficulty concentrating, fatigue, depression, insufficient cortisol production, chronic stress, poor recovery from illness, dizziness and more.

Glutamate is an excitatory neurotransmitter and is considered to be the most abundant neurotransmitter in the nervous system. Glutamate is involved in most aspects of normal brain function including cognition, memory and learning, although high levels of glutamate can cause excitotoxicity, a process where nerve cells are damaged by excessive stimulation. Elevated glutamate levels are commonly associated with panic attacks, anxiety, difficulty concentrating, OCD and depression, whereas low glutamate levels may result in agitation, memory loss, sleeplessness, low energy levels and depression.