Enterotoxigenic Escherichia coli (ETEC) LT is a significant marker for gastrointestinal health analysis. ETEC is a leading cause of traveler's diarrhea and is also a common contributor to diarrheal illnesses in developing countries, particularly affecting children. The "LT" in ETEC LT refers to the heat-labile enterotoxin produced by these bacteria. This toxin, similar in structure and function to cholera toxin, disrupts normal intestinal function by increasing the secretion of water and electrolytes in the small intestine, leading to diarrhea. The presence of ETEC LT in the gut microbiome is an indicator of an active or recent infection.

ETEC is a major cause of traveler’s diarrhea in adults in industrialized countries and a leading cause of infant diarrhea in developing countries. ETEC is estimated to cause 200 million episodes of diarrhea and approximately 380,000 deaths in children in the developing world and travelers to those areas. In the US, ETEC is estimated to cause approximately 17,800 foodborne illnesses annually. Enterotoxins produced by ETEC strains include heat-labile LT toxin and heat-stable ST toxin. ETEC illnesses are usually associated with acute watery diarrhea and sometimes nausea, headache, vomiting, or fever.

Eosinophil Activation Protein (EDN/EPX) is a protein released by activated eosinophils which has strong cytotoxic characteristics. 

Cytotoxic means that a substance or process can damage cells or cause them to die. "Cyto" means cell and "toxic" means poison.

The protein plays a significant role in a variety of inflammatory and mast-cell mediated pathologies in addition to fighting pathogens, particularly viral infections.

Eosinophil Cationic Protein (ECP) is a ribonuclease that is part of the RNase A superfamily, primarily associated with the body's immune response mechanisms, especially in the context of allergic reactions and parasitic infections.

ECP is released by eosinophils, a type of white blood cell that plays a crucial role in the body's immune defense system. Eosinophils are known to be involved in the modulation of immune responses and the mediation of inflammatory processes, particularly in allergic conditions such as asthma, rhinitis, and eczema, as well as in responses to parasitic infections.

The presence and concentration of ECP in bodily fluids are used as a biomarker to indicate the activation of eosinophils and the intensity of the inflammatory response. High levels of ECP are often associated with active disease states in conditions characterized by eosinophilic inflammation. For instance, in patients with asthma, elevated ECP levels can reflect the severity of airway inflammation and have been linked to disease exacerbation and decreased lung function. Similarly, in allergic rhinitis and atopic dermatitis, increased ECP levels correlate with symptom severity and the extent of eosinophilic involvement.

Eosinophil Protein X is a water-soluble protein that is found in eosinophils. Fecal Eosinophil Protein X levels are abnormally increased in people with intestinal inflammation where high concentrations of eosinophils may be found.

Eosinophils (EOS) are white blood cells involved in fighting parasites and regulating allergic and inflammatory responses. They appear on the CBC differential as "EOS Absolute," "Abs EOS," "EOS (Absolute) x10E3/uL," or similar labels. The absolute eosinophil count measures the actual number of eosinophils per volume of blood. The normal adult range is 0–0.4 × 10³/µL (0–400 cells/µL). High eosinophils most commonly indicate allergies, asthma, or eczema. Very high counts (above 1.5 × 10³/µL) may indicate parasitic infection or a more significant eosinophilic condition.

Eosinophils (EOS) are a type of white blood cell measured on a complete blood count (CBC) with differential. They are reported two ways: as an absolute count (EOS# or EOS Absolute — the actual number of eosinophils per microliter of blood) and as a percentage (EOS% — the proportion of all white blood cells that are eosinophils). Normal absolute count is 0.0–0.5 ×10³/µL; normal percentage is 0–5%. Elevated eosinophils (eosinophilia) most commonly indicate allergic disease, asthma, or parasite infection. Low eosinophils most commonly result from steroid use or acute bacterial infection.

The percentage of eosinophils in synovial fluid analysis is a valuable diagnostic marker that can indicate various joint conditions, particularly eosinophilic synovitis. It serves as a crucial piece of information for healthcare providers to determine the appropriate treatment and management strategies.

Eicosapentaenoic Acid (EPA) is a Polyunsaturated Omega-3 Fatty Acid and is involved in the regulation of inflammatory processes and prevention of blood clots.

Omega-3 fatty acids (omega-3s) have a carbon–carbon double bond located three carbons from the methyl end of the chain. Omega-3s, sometimes referred to as “n-3s,” are present in certain foods such as flaxseed and fish, as well as dietary supplements such as fish oil. Several different omega-3s exist, but the majority of scientific research focuses on three: alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). ALA contains 18 carbon atoms, whereas EPA and DHA are considered “long-chain” (LC) omega-3s because EPA contains 20 carbons and DHA contains 22.

Eicosapentaenoic Acid (EPA) is a Polyunsaturated Omega-3 Fatty Acid and is involved in the regulation of inflammatory processes and prevention of blood clots.

Omega-3 fatty acids (omega-3s) have a carbon–carbon double bond located three carbons from the methyl end of the chain. Omega-3s, sometimes referred to as “n-3s,” are present in certain foods such as flaxseed and fish, as well as dietary supplements such as fish oil. Several different omega-3s exist, but the majority of scientific research focuses on three: alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). ALA contains 18 carbon atoms, whereas EPA and DHA are considered “long-chain” (LC) omega-3s because EPA contains 20 carbons and DHA contains 22.

→ Eicosapentanoic acid (EPA) is an omega-3 fatty acid that participates in the health of cellular membranes, mediates lipid actions, and reduces inflammatory responses in the body.

→ EPA and DHA influence the types of inflammatory response mediators made in favor of anti-inflammatory eicosanoids such as leukotrienes, prostaglandins, and thromboxanes. EPA and DHA are also noted for moderate to strong anti-depressant effects.

→ Specific to EPA, it has been shown to suppress signaling of TNF-α in adipocytes.

→ EPA also increases cerebral oxygenation.

→ EPA appears to have some beneficial influence on regulating levels of leptin and increasing adiponectin.

→ EPA may enhance adaptive immunity by stimulating B cell responsiveness.

The EPA:AA ratio is a valuable predictor of cardiovascular risk.

The EPA:AA ratio may be a marker of chronic inflammation, with a lower ratio corresponding to higher levels of inflammation. It is now well established that inflammation plays an important role in cardiovascular disease.

The EPA (Eicosapentaenoic Acid) to Arachidonic Acid ratio is a measure often used to gauge the balance of anti-inflammatory and pro-inflammatory fatty acids in the body.

Eicosapentaenoic Acid (EPA) is an omega-3 fatty acid primarily found in fatty fish and fish oil supplements, known for its anti-inflammatory properties.

In contrast, Arachidonic Acid is an omega-6 fatty acid found in animal products and some vegetable oils, which can give rise to pro-inflammatory eicosanoids when metabolized.

The fatty acid profile shows the balance of fats and their metabolites in plasma. Your overall balance of omega-3 and omega-6 fats is represented by the ratios of AA/EPA(arachidonic acid/eicosapentaenoic acid) and EPA/DGLA.

The fatty acid profile shows the balance of fats and their metabolites in plasma. Your overall balance of omega-3 and omega-6 fats is represented by the ratios of AA/EPA(arachidonic acid/eicosapentaenoic acid) and EPA/DGLA.

Three of the most important omega-3 fatty acids are eicosapentaenoic acid (EPA), docosapentaenoic acid (DPA), and docosahexaenoic acid (DHA). Omega-3 fatty acids are primarily obtained from food sources, such as oily fish. They have antioxidant, anti-inflammatory, and antithrombotic effects, and can help to reduce triglyceride levels. 

Epi-Testosterone is one of several naturally-occurring testosterone compounds in the body that act as steroids.