COMPENDIUM ON FUNCTIONAL MEDICINE - Flipbook - Page 313
IgG, or Immunoglobulin G, is the most prevalent antibody in
human blood, accounting for about 75% of serum antibodies. It
plays a vital role in the immune system by helping to control
infections. IgG is essential for maintaining effective immune
responses as the most common type of antibody found in blood
circulation. High levels of IgG antibodies may indicate chronic
infections, autoimmune disorders, or certain types of cancer, while
low levels can suggest an immunodeficiency, making a person
more susceptible to infections.
Adult Normal
IgG
600 - 1600
mg/dL
Children
Normal IgG
540-1,610
mg/dl
Immunoglobulin A (IgA) is an antibody that plays an essential role
in the immune function of mucous membranes, helping to protect
the body against infections. It is primarily found in secretions like
tears, saliva, and mucus, and is produced in larger quantities than
all other types of antibodies combined. High and low IgA antibody
levels can indicate different health issues. Low IgA levels may lead
to increased susceptibility to infections and are associated with
conditions like autoimmune diseases. In contrast, high IgA levels
can suggest chronic infections or inflammation and may be linked
to certain cancers.
Adults Normal
IgA
0.8 to 3.0 g/L
Children
Normal IgA
less than 1
mg/dL
IgM antibodies are the largest antibodies produced by the
immune system and are the first to respond to new infections. They
are primarily found in the blood and are crucial in the body's initial
defense against pathogens. High levels of IgM antibodies indicate
that your immune system is actively responding to an infection or
inflammation. In contrast, low levels suggest that your immune
system is not producing enough of this important antibody, which
could increase susceptibility to infections.
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