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Table 2 Serum IgG antibody (median and i-q range, μg/ml) against pigeon antigens quantified by fluorimetry in pigeon fanciers according to category of likelihood of Hypersensitivity Pneumonitis, based on symptoms.

From: Quantifying serum antibody in bird fanciers' hypersensitivity pneumonitis

  Category of likelihood of HP
  Probable Possible Unlikely
Number 22 10 18
Pigeon serum 135.0 70.3 3.4
  (49.6–161.0) (23.0–94.9) (0.01–11.1)
Pigeon feathers 250.0 174.0 12.4
  (142.5–250.0) (80.0–250.0) (2.3–86.4)
Pigeon droppings 250.0 250.0 43.2
  (250.0-250.0) (121.5–250.0) (26.2–101.8)