Global Allergy Diagnostics Market By Product & Service (Consumables, Instruments, Services) By Test Type (In Vivo, In Vitro) By Allergen (Inhaled Allergens, Food Allergens, Drug Allergens, Other Allgerens) By End-user (Diagnostic Laboratories, Hospital-based Laboratories, Academic Research Institutes, Other End-Users) By Region and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast to 2024-2033