Which allergen extracts are standardized?

Standardized allergen extracts are those that have been calibrated to ensure consistent potency and quality across different batches. This is particularly important in allergy management and immunotherapy, as it allows for reliable dosing and efficacy of treatments.

Grass, ragweed, cat, and dust mite extracts are standardized because they are commonly used in immunotherapy and diagnostics. This standardization ensures that healthcare providers can offer precise and predictable treatment options for patients with allergies to these specific triggers. Each of these allergens has been extensively studied, and the extracts have established dose-response relationships that are crucial for effective clinical application.

On the other hand, while other options may contain allergen extracts, they do not necessarily include those that are consistently standardized in clinical practice. The variability in potency and composition of extracts from sources like small animals, cereal grains, latex, tree pollen, insect venom, and mold can pose challenges for treatment efficacy and patient safety. Thus, option B stands out as the correct answer reflecting the allergen extracts that are reliably standardized for therapeutic use.