Haemophilus influenzae B, IgG

What is the purpose of this test?

The Haemophilus influenzae B (Hib), IgG Blood Test measures the level of IgG antibodies in the blood that help protect against Haemophilus influenzae type B (Hib), a serious bacterial infection. Hib can cause life-threatening illnesses such as meningitis, pneumonia, epiglottitis, and bloodstream infections, especially in young children, older adults, and individuals with weakened immune systems. This test helps evaluate immune response to Hib, either from vaccination or past infection, by detecting the presence of protective antibodies.

Low IgG levels may indicate a weakened immune response, putting individuals at higher risk for Hib-related infections. This test is particularly useful for people with immune system disorders, those undergoing immunosuppressive therapy, or individuals who need to confirm their vaccine effectiveness. Early detection of inadequate immunity allows for preventive measures such as booster vaccinations or medical intervention to reduce the risk of severe infections.

Who should get this test?

The Haemophilus influenzae B, IgG Blood Test may be beneficial for:

• Individuals with weakened immune systems, including those with primary immunodeficiency disorders.
• People undergoing chemotherapy, organ transplants, or immunosuppressive treatments that may affect vaccine response.
• Children and adults who need to confirm immunity after receiving the Hib vaccine.
• Healthcare workers, caregivers, and those frequently exposed to high-risk environments.
• Individuals with a history of recurrent infections, including respiratory and bloodstream infections.

When should I order the Haemophilus influenzae B, IgG Blood Test?

Individuals may consider ordering this test if they have symptoms or exposure concerns related to Haemophilus influenzae type B (Hib) infection. Symptoms to consider:

• Fever and chills that persist without a known cause.
• Severe headaches or stiff neck, which may indicate meningitis.
• Difficulty breathing or persistent coughing, suggesting pneumonia.
• Swelling in the throat or difficulty swallowing, signs of epiglottitis.
• Joint pain, redness, or swelling due to possible infection spread.
• Unexplained fatigue or weakness,which may indicate an immune system issue.

If you have these symptoms or suspect Hib exposure, the Haemophilus influenzae B, IgG Blood Test can help determine your immunity status and guide your doctor in making informed health decisions.