beta tryptase

beta tryptase

A tetrameric enzyme released from mast cells during anaphylactic reactions, which provides supportive evidence in suspected anaphylactic death (with the caveat that it can also be increased in non-anaphylatic deaths and can be normal in asthmatic and anaphylactic deaths). The WHO views elevated tryptase as a minor criterion in the diagnosis of systemic mastocytosis.
References in periodicals archive ?
The other cause of a raised tryptase is mastocytosis, in which the baseline level may be high and the alpha tryptase is >20x higher than the beta tryptase.