Elevated antibody levels can be clinically significant — while the antibodies themselves don’t destroy anything, they do trigger an inflammatory response that can cause significant destruction of tissue and resulting symptoms. This response is not necessarily dependent on antibody levels. However, an equivocal result may mean you are just beginning to exhibit an immune reaction, so this is an important time to take measures to support the body in damping immune reactivity.

Deamidated gliadin peptide (DGP) antibodies, measured as IgA or IgG (anti-DGP), are blood tests used in the evaluation of suspected celiac disease. These antibodies help detect an abnormal immune response to gluten and are particularly useful in situations where standard celiac tests may be less reliable.

Detection of gliadin antibodies aids in the diagnosis and monitoring of certain gluten-sensitive enteropathies, such as celiac disease and dermatitis herpetiformis.

Deamidated Gliadin Peptide (DGP) reflects immune reactivity to modified gluten proteins. Elevated DGP antibodies are associated with gluten-driven inflammation, increased intestinal permeability, and celiac or non-celiac gluten sensitivity, helping assess immune responses to gluten exposure.

Normal or low DGP antibody levels suggest appropriate immune tolerance to gluten-derived peptides and intact gut barrier function. In this context, gluten-related immune activation is unlikely to be a primary driver of symptoms.

Deamidated Gliadin Peptide (DGP) IgA is an antibody that reflects the immune system’s response to gluten. It is commonly used in the evaluation of celiac disease and may help identify gluten-related immune activation, particularly in early or active stages. Elevated levels suggest that the body is reacting to gluten and may indicate intestinal inflammation or damage.

Deamidated Gliadin Peptide (DGP) IgG is an antibody that reflects the immune system’s response to gluten. It is particularly useful in identifying celiac disease in individuals with IgA deficiency or when other celiac markers are inconclusive. Elevated levels suggest an abnormal immune reaction to gluten and may indicate intestinal inflammation.

The deformity rate in a semen analysis refers to the percentage of sperm with abnormal morphology or shape within a semen sample. The deformity rate is an essential factor in assessing male fertility because sperm with abnormal morphology may have difficulty fertilizing an egg.

The World Health Organization (WHO) provides reference values for normal sperm morphology in a semen analysis. According to the WHO criteria, a semen sample is considered normal when at least 4% of sperm exhibit normal morphology. Sperm with abnormal shapes can include those with misshapen heads, tails, or other structural abnormalities.

Dehydroepiandrosterone (DHEA) is a steroid that is produced by both the adrenal cortex and the testis. The levels of this steroid increase before the onset of puberty (adrenarche) and decrease significantly with age.

DHEA and DHEA-S are the major precursors of 17-ketosteroids.

DHEA levels peak at around age 25, then decline steadily through the following decades. DHEA can be converted downstream in the steroidogenic pathway to create androgens and estrogens. It has antioxidant and anti-inflammatory properties and can be protective against corticosterone’s neurotoxic effects.

Dehydroepiandrosterone (DHEA) is predominantly produced in the adrenal glands and serves as a precursor hormone for androstenedione and eventually estrone and testosterone. High levels of DHEA may be due to DHEA or pregnenolone supplementation. Additional research suggests DHEA elevations may also be due to such conditions as adult-onset adrenal hyperplasia, congenital adrenal hyperplasia, and very rarely, adrenal carcinoma. SULT2A1 catalyzes the sulfate conjugation of DHEA, and research suggests dopamine can induce this enzyme.

Dehydroepiandrosterone (DHEA) is a hormone predominantly produced in the adrenal glands which serves as precursor hormone for androstenedione and eventually estrone and testosterone.

Dehydroepiandrosterone (DHEA) is a naturally occurring steroid hormone produced mainly by the adrenal glands, with smaller amounts synthesized in the gonads (ovaries and testes) and the brain. DHEA acts primarily as a precursor for the body’s major sex hormones—testosterone and estrogen—meaning it is converted into these hormones as needed. This role is crucial for reproductive function, mood regulation, metabolism, immune function, and maintaining overall hormonal balance in both men and women.

Biological Functions of DHEA

• Hormone Precursor: DHEA is converted into androgens (like testosterone) and estrogens, supporting the development of secondary sexual characteristics and reproductive health.

• Neurosteroid: DHEA has effects in the central nervous system, acting as a neurosteroid that can influence mood, cognitive function, and memory.

• Metabolic and Immune Effects: It modulates endothelial function (essential roles in maintaining blood vessel health and regulating blood flow), reduces inflammation, improves insulin sensitivity, supports fat metabolism, and may enhance immune response.

• Antioxidant Properties: DHEA may help combat oxidative stress and inflammation.

Dehydroepiandrosterone sulfate or DHEA-S is the sulfated form of dehydroepiandrosterone (DHEA) and the major steroid precursor in humans. This sulfation is reversibly catalyzed by sulfotransferase 2A1 (SULT2A1) primarily in the adrenals, the liver, and the small intestine.

Dehydroepiandrosterone sulfate or DHEA-S is the sulfated form of dehydroepiandrosterone (DHEA) and the major steroid precursor in humans. This sulfation is reversibly catalyzed by sulfotransferase 2A1 (SULT2A1) primarily in the adrenals, the liver, and the small intestine.