ZRT Laboratory (Urinary Neurotransmitters)

Urine

Performed by: ZRT Laboratory

Biomarkers included in this panel:

3-Hydroxykynurenine

3-Hydroxykynurenine is a metabolic intermediate of the kynurenine pathway that elicits neurotoxic effects.

Learn more

5-HIAA

5-HIAA is the primary metabolite of serotonin, a chemical substance (neurotransmitter) that transmits messages between nerve cells. After it is used by the body, serotonin is broken down in the liver, and its metabolites, including 5-HIAA, are e

Learn more

5a,3a-Androstanediol (Male)

Urine

5a,3a-Androstanediol, a metabolite of the potent androgen 5a-Dihydrotestosterone (5a-DHT), is a significant marker in the ZRT Laboratory Urinary Neurotransmitters panel, emphasizing its role in male health and hormonal balance. This metabolite provid

Learn more

5a-DHT (Male)

Urine

5a-Dihydrotestosterone (5a-DHT), a potent androgen, is a crucial marker in the ZRT Laboratory Urinary Neurotransmitters panel, underscoring its significance in male health and hormonal research. 5a-DHT, derived from testosterone via the enzyme 5-alph

Learn more

Allopregnanolone (Male)

Urine

Allopregnanolone, a neurosteroid of growing interest in male health. This metabolite of progesterone plays a crucial role in modulating brain function, particularly influencing mood, stress response, and cognitive processes. In men, allopregnanolone

Learn more

Androstenedione (Male)

Urine

Androstenedione, a crucial androgenic steroid, is a notable marker in the ZRT Laboratory Urinary Neurotransmitters panel, reflecting its significant role in male health and endocrinology. In men, androstenedione serves as a vital precursor in the bio

Learn more

Creatinine (pooled)

Creatinine values are measured to correct results for urine dilution. Creatinine is a waste product produced by muscles from the breakdown of a compound called creatine. Creatinine is filtered from the blood by the kidneys and released i

Learn more

DHEA (Male)

Urine

DHEA (Dehydroepiandrosterone), a pivotal adrenal hormone, features prominently in the ZRT Laboratory Urinary Neurotransmitters panel, underscoring its importance in male health and wellness. As one of the most abundant circulating steroids in humans,

Learn more

DOPAC

Dopac (aka 3,4-Dihydroxyphenylacetic acid) is a metabolite of the neurotransmitter dopamine. Dopamine serves as the reward and pleasure center in the brain. DOPAC and HVA (Homovanillic Acid) are dopamine metabolites. DOPAC levels, when v

Learn more

Dopamine

Dopamine is a chemical found naturally in the human body. It is a neurotransmitter, meaning it sends signals from the body to the brain. Dopamine plays a part in controlling the movements a person makes, as well as their emotional responses. The righ

Learn more

Epi-Testosterone (Male)

Urine

Epi-Testosterone, an often-overlooked yet significant steroid hormone, is a critical marker in the ZRT Laboratory Urinary Neurotransmitters panel, underlining its relevance in the realm of male health diagnostics. Although chemically similar to testo

Learn more

Epinephrine (pooled)

Epinephrine is commonly known as adrenaline. Your body naturally produces it during times of stress. The hormone is also necessary for maintaining a healthy cardiovascular system — it makes the heart beat more strongly, and diver

Learn more

Estradiol (male)

Urine

  Estradiol is vital in male health and is measured in the ZRT Laboratory Urinary Neurotransmitters panel. Originating from testosterone, it influences male libido, erectile function, and spermatogenesis. Imbalances can lead to health issues;

Learn more

GABA

GABA stands for Gamma-aminobutyric acid (γ-Aminobutyric Acid) and is a nonessential protein amino acid. GABA is an inhibitory neurotransmitter in the central nervous system.

Learn more

Glutamate

Glutamate functions as the major excitatory neurotransmitter and metabolic fuel throughout the body. Glutamate is produced in your body, and is also found in many foods. The brain's major excitatory neurotransmitter glutamate (also known as gl

Learn more

Glutamine

Glutamine improves immune function, balances ammonia in the body, contributes to biosynthesis of proteins, amino acids, nucleic acids, glutathione, glutamate, and GABA.

Learn more

Glycine

Glycine is a simple, nonessential (can be made in the body) amino acid that plays a role in the production of DNA, phospholipids, collagen, creatine, heme and glutathione. Glycine serves as a neurotransmitter that modulates excitatory signals in the

Learn more

Histamine

Histamine is a compound that affects immune response and physiological function of the digestive tract, and also acts as a neurotransmitter. Histamine helps control the sleep-wake cycle as well as energy and moti

Learn more

Histidine

Histidine ameliorates fatigue, promotes clear thinking and concentration, reduces appetite, decreases anxiety, improves sleep and glucose homeostasis, and gives rise to histamine.

Learn more

HVA

Homovanillate (aka Homovanillic Acid) is a dopamine metabolite. Homovanillate and Vanilmandelate are breakdown products from neurotransmitters involved in hormone and nerve impulse transmission, called catecholamines.

Learn more

Kynurenic Acid

Kynurenic acid, a neuroactive metabolite produced from kynurenine, is regarded to be neuroprotective unless in excess amounts.

Learn more

Kynurenine

Kynurenine is a central metabolite of the amino acid tryptophan with vasodilatory properties.

Learn more

Melatonin (1st Morning)

Urine

Melatonin (1st Morning), a crucial marker of sleep-wake cycle regulation and overall well-being, is a key component of the ZRT Laboratory Urinary Neurotransmitters panel, highlighting its significance in both sleep medicine and general health monitor

Learn more

Melatonin (2nd Morning)

Urine

Melatonin (2nd Morning), a pivotal marker in the ZRT Laboratory Urinary Neurotransmitters panel, offers essential insights into an individual’s sleep-wake cycle and overall neuroendocrine health. This hormone, predominantly secreted by the pine

Learn more

Melatonin (Evening)

Urine

Melatonin (Evening), a critical biomarker in the ZRT Laboratory Urinary Neurotransmitters panel, plays an instrumental role in assessing nocturnal melatonin production and understanding sleep-wake cycle disturbances in individuals. Melatonin, often c

Learn more

Melatonin (Night)

Urine

Melatonin (Night), a key indicator of sleep health and circadian rhythm, is a prominent marker in the ZRT Laboratory Urinary Neurotransmitters panel, underscoring its crucial role in evaluating nocturnal melatonin activity and overall well-being. Mel

Learn more

N-Methylhistamine

N-methylhistamine is a major metabolite of the neurotransmitter histamine.

Learn more

Norepinephrine (pooled)

Norepinephrine, also known as noradrenaline, is important for mental focus and emotional stability. Norepinephrine functions as a neurotransmitter and hormone that regulates the “fight or flight” response and elevates blood pressure an

Learn more

Normetanephrine

Normetanephrine, a metabolite of norepinephrine, is at normally low levels in the plasma. Certain tumors increase the levels and will increase the levels of nor-metanephrine. The Normetanephrine test, when normal, means these tumors are not present.

Learn more

PEA

PEA stands for Beta-phenylethylamine and is an excitatory neurotransmitter made from phenylalanine and it modulates neuron voltage potentials to favor glutamate activity and neurotransmitter firing.

Learn more

Pregnanediol (Male)

Urine

Pregnanediol, a key marker in male health, is prominently featured in the ZRT Laboratory Urinary Neurotransmitters panel. Pregnanediol is a metabolite of progesterone, a hormone often associated with female reproductive health but equally important i

Learn more

Ratio: Norepi/Epi

Norepinephrine and epinephrine are catecholamine messengers that play important roles in the regulation of diverse physiological systems by acting through adrenergic receptors. 

Learn more

Serotonin

Serotonin plays important roles in the resolution of mood, sleep, and appetite. Serotonin is an inhibitory neurotransmitter synthesized by enzymes that act on tryptophan and/or 5-HTP.

Learn more

T/Epi-T (Male)

Urine

The Testosterone to Epi-Testosterone ratio (T/Epi-T), a critical metric in male hormonal assessment, is a pivotal component of the ZRT Laboratory Urinary Neurotransmitters panel, emphasizing its importance in the field of men's health and endocri

Learn more

Taurine

Taurine improves sleep, relieves anxiety, and has neuroprotective properties.

Learn more

Testosterone (Male)

Urine

Testosterone, the primary male sex hormone, is a key focus in the ZRT Laboratory Urinary Neurotransmitters panel, highlighting its paramount importance in men's health and endocrinology. This hormone plays a central role in male physiology, influ

Learn more

Tryptophan

Tryptophan is an amino acid that generates serotonin, melatonin, and kynurenine derivatives.

Learn more

Tyramine

Tyramine is a trace amine derived from tyrosine, found naturally in food. Tyramine has vasoconstrictive properties and can increase blood pressure and trigger migraines.

Learn more

Tyrosine

Tyrosine enhances cognitive performance, energy, and alertness, and improves memory after sleep deprivation.

Learn more

VMA

Vanilmandelate is a metabolite of epinephrine and norepinephrine (also known as adrenaline and noradrenaline).

Learn more

Xanthurenic Acid

Xanthurenic acid is a metabolite of the kynurenine pathway, formed from 3-Hydroxykynurenine and serves as an indirect marker of vitamin B6 status.

Learn more