Longevity

Rubella IgG Blood Test: Normal Ranges, Causes &...

What Is Rubella IgG? Rubella IgG is an antibody that indicates immunity to the rubella virus (German measles), either from past infection or from vaccination (the MMR vaccine). IgG antibodies...

Rheumatoid Factor Blood Test: Normal Ranges, Ca...

What Is Rheumatoid Factor? Rheumatoid factor (RF) is an autoantibody - an antibody directed against the body's own immunoglobulin G (IgG). Specifically, RF is usually an IgM antibody that binds...

Protein (Total) Blood Test: Normal Ranges, Caus...

What Is Total Protein? Total protein measures the combined amount of albumin and globulin in your blood serum. These two protein groups make up virtually all the protein in plasma...

Prolactin Blood Test: Normal Ranges, Causes & W...

What Is Prolactin? Prolactin is a hormone produced by the anterior pituitary gland, best known for its role in stimulating breast milk production (lactation) after childbirth. However, prolactin has over...

Progesterone Blood Test: Normal Ranges, Causes ...

What Is Progesterone? Progesterone is a steroid hormone primarily produced by the corpus luteum in the ovary following ovulation. During pregnancy, the placenta becomes the major source from about 10...

Globulin Blood Test: Normal Ranges, Causes & Wh...

What Is Globulin? Globulins are a diverse group of proteins found in the blood, second in abundance only to albumin. Together, albumin and globulin make up the total protein in...