Which type of tryptase (a -tryptase or b - tryptase) does ImmunoCAP Tryptase measure?

ImmunoCAP Tryptase

ImmunoCP Tryptase measures total tryptase. The assay is based on two monoclonal antibodies (B12 and G4) that recognize both a-tryptase and b-tryptase.
 
Reference
  1. Duff Hogan A, Schwartz LB. Markers of Mast Cell Degranulation. In Methods: A Companion to Methods in Enzymolgy, Academic press 1997;13:43-52.
Further Reading