The Vasopressin test measures the level of antidiuretic hormone (ADH) in blood.

The marker "VCA gp125 (IgG)" is an important component of a comprehensive test that aims to detect potential neural autoimmunity, which can affect the nervous system and brain health. "VCA" stands for Viral Capsid Antigen, and "gp125" refers to a specific glycoprotein component of the Epstein-Barr Virus (EBV) that this test targets. The "IgG" in the name signifies Immunoglobulin G, a type of antibody. In the context of this test, the presence of IgG antibodies against the VCA gp125 indicates a past or ongoing immune response to the EBV.

The Epstein-Barr Virus is known for its association with various conditions, including but not limited to, mononucleosis, certain cancers, and potentially contributing to autoimmune diseases and neurological conditions. The NeuralZoomer Plus panel, offered by Vibrant Wellness, includes this marker as part of its broader effort to identify autoantibodies that could signal the presence of neurological conditions, aiding healthcare providers in diagnosing and managing potential autoimmune-related neurological disorders. This tool is particularly valuable for identifying silent or subclinical conditions that may otherwise go unnoticed, enabling early intervention strategies to prevent or mitigate long-term health issues related to neural autoimmunity.

VDRL stands for Venereal Disease Research Laboratory, the laboratory that developed the method. It is a screen for syphilis reported as a word rather than a number, and what it detects is not the bacterium. It detects reagin — antibodies raised against a cardiolipin, phosphatidylcholine and cholesterol antigen, which the CDC classes as a nontreponemal test.

Reagin rises in syphilis and in a range of unrelated conditions, so a reactive result has to be confirmed by a treponemal test that looks for antibodies to Treponema pallidum itself. That is also why an Equivocal result is unresolved rather than reassuring.

A non-reactive result has limits. Antibodies can take up to two weeks to appear after infection, and against microscopy of a sore, VDRL sensitivity in primary syphilis has been reported from 50.0% to 78.4%, falling to 47% to 64% in tertiary syphilis. A very high antibody level can also block the reaction — the prozone effect, found in 4.7% of primary syphilis in the CDC's RPR review.

After treatment, nontreponemal titers usually fall and can disappear, though some decline less than expected or stay reactive at a low level; treponemal tests ordinarily stay reactive for life. Treatment response is read from the titer, against an earlier one from the same test and specimen type, preferably from the same laboratory.

Presence of vegetable fibers is indicative of improper chewing or digestive insufficiency.

Vegetable fibers in the stool may be indicative of inadequate chewing, or eating “on the run”.

VEGF stands for Vascular Endothelial Growth Factor. VEGF is a growth factor that promotes the growth of new blood vessels. The body makes VEGF in response to low oxygen levels, also known as hypoxia. Thus, when tissues are receiving too little oxygen rich blood flow, VEGF is produced to provide a better blood supply to the tissues. VEGF also increases the permeability or leakiness of blood vessels. In fact, one form of VEGF, VEGF-A was once known as vascular permeability factor. VEGF plays a role in cell metabolism, bone formation, and blood cell creation (hematopoiesis). Unfortunately, cancer cells also produce VEGF to help improve their own blood flow. Interestingly, cancer treatments have been developed to block the action of VEGF to starve cancerous tumors of blood flow.

The marker VEGF, Serum refers to a specific test that measures the levels of vascular endothelial growth factor (VEGF) in a person's blood serum. VEGF is a protein that plays a crucial role in the growth of blood vessels. This test is important because abnormal levels of VEGF can indicate various medical conditions, such as cancers, cardiovascular diseases, and eye disorders. By measuring VEGF in the serum, doctors can gain valuable insights into a patient's vascular health and the potential progression of certain diseases. This information helps in diagnosing conditions early and guiding appropriate treatment strategies to manage or improve the patient's health outcomes.

Veillonella are anaerobic, gram-negative cocci, part of the normal flora of the mouth, gastrointestinal tract, and vaginal tract.

Veillonella are anaerobic, gram-negative cocci, part of the normal flora of the mouth, gastrointestinal tract, and vaginal tract.

Veillonellaceae are normal gut bacteria involved in fermentation and short-chain fatty acid production. Healthy levels support microbial balance and digestive function, while low or high levels may signal changes in gut fermentation, inflammation, dietary patterns, or overall microbiome stability.

Quantitative Assessment:

VCL is a quantitative parameter used to assess sperm motility. It is one of the factors evaluated during a semen analysis to determine the quality and functionality of sperm.

Velocity of Straight Line (VSL) is an important parameter measured in semen analysis to assess sperm motility. VSL refers to the time-average velocity of a sperm head as it moves along a straight line between its first and last detected positions. It is a crucial aspect of sperm motility evaluation and provides insights into the ability of sperm to move efficiently in a forward direction.

In terms of what is considered a good VSL value in semen analysis, the specific threshold can vary depending on laboratory standards and reference values. However, generally, a VSL value above 25-30 micrometers per second (μm/s) is often considered indicative of healthy sperm motility. Higher VSL values suggest that sperm are capable of progressive, forward movement, which is essential for successful fertilization.

Verrucarin A (VRA) is a macrocyclic trichothecene mycotoxin produced from Stachybotrys, Fusarium, and Myrothecium. Trichothecenes are frequently found in buildings with water damage but can also be found in contaminated grain. VRA is a small, amphipathic molecule that can move passively across cell membranes.

Verrucarin and Verrucarol are trichothecene mycotoxins mainly produced by Fusarium and Aspergillus species and are known to cause tremors, immune toxicity, inflammation, are cytotoxic (= can damage cells or cause them to die), and are potent protein synthesis inhibitors (= stops or slows the growth or proliferation of cells by disrupting the processes that lead directly to the generation of new proteins).

Verrucarin and Verrucarol are trichothecene mycotoxins mainly produced by Fusarium and Aspergillus species and are known to cause tremors, immune toxicity, inflammation, are cytotoxic (= can damage cells or cause them to die), and are potent protein synthesis inhibitors (= stops or slows the growth or proliferation of cells by disrupting the processes that lead directly to the generation of new proteins).