Normal Lab Values - Immunoglobulins

Immunoglobulins

Immunoglobulin Test

measures the level of types of antibodies in the blood

Globulins, total

2.5-3.5 g/dL (25-35 g/L)

Immunoglobulin G (IgG)

• most common antibody

• It's in blood and other body fluids, and protects against bacterial and viral infections

• can take time to form after an infection or immunization

IgG

640-1430 mg/dL (6.4-14.3 g/L)

Immunoglobulin A (IgA)

found in the linings of the respiratory tract and digestive system, as well as in saliva (spit), tears, and breast milk.

IgA

70-300 mg/dL (0.7-3.0 g/L)

Immunoglobulin M (IgM)

found mainly in blood and lymph fluid, this is the first antibody the body makes when it fights a new infection.

IgM

20-140 mg/dL (0.2-1.4 g/L)

Immunoglobulin D (IgD)

the least understood antibody, with only small amounts in the blood

IgD

less than 8 mg/dL (80 mg/L)

Immunoglobulin E (IgE)

• Normally found in small amounts in the blood

• There may be higher amounts when the body overreacts to allergens or is fighting an infection from a parasite

IgE

0.01-0.04 mg/dL (0.1-0.4 mg/L)