Knowing your blood group is crucial for safe blood transfusions, organ transplants, and managing pregnancies to prevent Rh incompatibility.

Common reasons include chronic sinusitis, nasal polyps, blocked sinus passages, and recurrent sinus infections that do not respond to other treatments.

The test measures the number of eosinophils in the blood to assess immune system activity and detect various conditions.

No, fasting is not required for this test.

Elevated counts can be caused by allergic reactions, parasitic infections, autoimmune diseases, and certain cancers.

The test involves a simple blood draw, which may cause slight discomfort but is generally well-tolerated.

Results are typically available within a few hours to a day