Humulus Antigen is a specific substance used in the detection and measurement of allergens present in Humulus, commonly known as hops. Humulus is a plant that is primarily associated with the brewing industry and is used to impart flavor and aroma to beer. However, it can also cause allergic reactions in sensitive individuals. The Humulus Antigen is derived from proteins found in Humulus and is used in allergy testing to identify individuals who are allergic to Humulus. By measuring specific antibodies in the blood or conducting skin prick tests, healthcare professionals can accurately diagnose Humulus allergies and provide appropriate management and treatment plans.