IgG is an immunoglobluin monomer, meaning that it is one immunoglobulin that is small enough to cross the placenta. An example would be the Rh antibody that causes isoimmunization between Rh negative mothers and Rh positive fetuses. In constrast, ABO blood group immunoglobulins are IgM which is a pentamer, meaning it is composed of 5 immunoglobulins and is too large to cross the placenta.
IgG is the only antibody small enough to cross he placenta.
IgG is the most abundant type of immunoglobulin in the blood, making up about 75% of all immunoglobulins. It plays a key role in immune response by helping to neutralize pathogens and toxins, and is the only antibody class that can cross the placenta from mother to fetus.
IgG, is the predominant Ig class present in human plasma. Produced as part of the secondaryimmune response to an antigen, it is approximately 75% of total serum Ig. IgG is the only class of Ig that can cross the placenta in humans.
I have sarciodosis
also called gamma globulin electrophoresis, or immunoglobulin electrophoresis, is a method of determining the blood levels of three major immunoglobulins: immunoglobulin M (IgM), immunoglobulin G (IgG), and immunoglobulin A (IgA).
Immunoglobulin G; it makes up 80% of the Immunoglobulin content in the bloodstream
There are five immunoglobulin classes (isotypes) of antibody molecules found in serum: IgG, IgM, IgA, IgE, and IgD. IgA (immunoglobulin A) IgD (immunoglobulin D) IgE (immunoglobulin E) IgG (immunoglobulin G) IgM (immunoglobulin M)
Normal range is between 700 and 1600.
The class of immunoglobulin to respond to the fist exposure of an antigen is immunoglobulin class M (IgM). While Immunoglobulin G (IgG) would predominate on the second exposure.
The immunoglobulin G (IgG) is the most important for humans; see also the link below.
The first antibodies produced by a newborn are primarily Immunoglobulin M (IgM) antibodies. These antibodies are typically produced in response to infections and are essential for the initial immune response. Additionally, newborns receive Immunoglobulin G (IgG) antibodies through the placenta during pregnancy, providing passive immunity. However, the active production of IgM begins shortly after birth as the infant's immune system starts to develop.
The class of immunoglobulin that is produced in the primary immune response is Immmunoglobulin M (IgM). On secondary exposure, the class that predominates would be Immunoglobulin G (IgG).