Allergy Cladosporium Herbarum Fungus test is a type of blood test that is used to determine whether a patient is allergic to Cladosporium Herbarum Fungus or Molds. The test checks and measures the level of IgE Antibodies in the blood that is responsible for causing allergies. Cladosporium Herbarum is the most common organism found in the environment and is well known for triggering asthmatic attacks.