On Demand Medical Testing

Leptin is an adipocyte-derived hormone that is essential for normal body weight regulation. Leptin production is under neuroendocrine control so that serum concentrations vary directly with the amount of triglycerides stored in adipose tissue depots.

A lipase test measures the amount of this enzyme in a blood sample. High amounts of lipase may be found in the blood when the pancreas is damaged or when the tube leading from the pancreas (pancreatic duct) to the beginning of the small intestine is blocked.

A lipid panel is a blood test that measures lipids—fats and fatty substances used as a source of energy by your body. Lipids include cholesterol, triglycerides, high-

Elevated concentrations of Lp(a) are associated with increased risk of coronary artery disease.

Lyme disease is caused by a bacterium borrelia burgdorferi and is transmitted by ticks. EIA is the screening test with high sensitivity for antibody detection. Western blot testing qualitatively examines with high specificity antibodies in a patient's specimen. Western blot testing is appropriate for confirming a detected EIA test result.

Magnesium is an essential trace element. Deficiency leads to irritability, neuromuscular abnormalities, cardiac and renal damage. Its salts are used as antacids and cathartics. Excessive amount may cause CNS depression, loss of muscle tone, respiratory and cardiac arrest.

Magnesium measurements are used in the diagnosis and treatment of hypomagnesemia (abnormally low plasma levels of magnesium) and hypermagnesemia (abnormally high plasma levels of magnesium). Magnesium is decreased in chronic nephritis, acute pancreatitis, and alcoholic cirrhosis. It is increased in acute or chronic renal failure and Addison's Disease.

Measles is an acute infection caused by Rubeola Virus.

Mononucleosis tests are blood tests to look for antibodies that indicate mononucleosis (mono), which is caused by the Epstein-Barr virus (EBV). The antibodies are made by the immune system to fight an infection

Mumps is an acute, usually self-limited systemic illness characterized by parotitis, high fever and fatigue. One-third of infections are asymptomatic. A live attenuated vaccine is available. The mumps IgG antibody test is sufficiently sensitive to establish immune status of the patient.