“…A second investigation on the cadaverous blood sample is the dosage of beta-tryptase. As we already said, the degranulation of the mast-cells releases powerful chemical mediators (histamine, tryptase, etc..) (Ansari et al, 1993, Carson et al, 2009Way & Baxendine 2002). The tryptases, instead, are relatively stable post-mortem (values can remain high for some days in a serum sample kept at room temperature and for some months if freezed) (Joint Task Force on Practice Parameters et al, 1998;Horn, 2004) and their dosage is very useful in the diagnostics of acute anaphylaxis.…”