Test OverviewGluten from wheat and related grains, and Casein from dairy products, contain peptides (short protein chains) called Gliadorphin (or gluteomorphin) and Casomorphin, respectively. These peptides have been shown to bind to opiate receptors in the brain, thus mimicking the effects of opiate drugs like heroin and morphine. This test measures the levels of these peptides excreted in the patient's urine.
- Autism Spectrum Disorder (ASD), Pervasive Developmental Disorder (PDD), Asperger's Syndrome, Attention-Deficit Disorder (ADD), and learning disability.
- Depression and other mood disorders.
- Chronic Fatigue Syndrome.
- Any patient presentation that has features of opiate use or withdrawal.
- Avoid soy products at least 1 week prior to testing.
- Collect at least 5 mL of first morning urine, preferably before any food or drink.
- Refrigerate immediately. Do not freeze.
- Ship with frozen gel pack.
Your doctor or lab may have different instructions that supersede the above.
Labs Performing Test
|Name of Lab||Lab Code||Estimated Cost||Processing Time||Comments|
|Great Plains||$110||2-3 weeks||Cash discount and some insurance|
Costs cited are subject to change and may be reduced by insurance or cash discounts and increased by sample collection fees.
TheoryGliadorphin (from wheat and similar grains) and Casomorphin (from milk) have been shown to bind to opiate receptors in the brain, thus mimicking the effects of opiate drugs like heroin and morphine. These compounds have been shown to react with areas of the brain such as the temporal lobes, which are involved in speech and auditory integration.
Children with autism frequently seem addicted to wheat and dairy products.
In most cases, people who have food allergies to milk and wheat are also sensitive to Gliadorphin and Casomorphin. This may be because both the Gliadorphin/Casomorphin sensitivity and the wheat/milk food allergy may share a common cause: inadequate digestion or a leaky gut that allows undigested protein to pass directly from the gut to the blood circulation.
However, there are some people who may not show a food allergy to milk or wheat, but have the peptide problem and vice versa, so it may be a good idea to have both the peptide and food allergy testing done.
The IgG Food Allergy Test generally provides more information than the Gluten and Casein Peptide Test, but on the other hand the IgG Food Allergy Test requires a more invasive blood sample draw, whereas the Gluten and Casein Peptide Test only requires a urine sample.
- A 7-amino acid peptide (tyr pro gln pro gln pro phe) derived from the wheat protein gluten. Other related grains such as rye, barley and oats also contain this same peptide.
- Present in urine samples of children with autism.
HypothesesDr. Weyrich hypothesizes that patients will exhibit a linear dose-response curve to Gliadorphin and Casomorphin, which suggests that symptom improvement may be linearly related to the extent to which dairy and wheat can be eliminated from the diet. This is in contrast to the extremely strict gluten-free diet required to successfully treat celiac disease.
Dr. Weyrich hypothesizes that the opioid-like effects of Gliadorphin and Casomorphin may also reduce gut mobility, leading to constipation.