Tryptase Test: Reference Value

Tryptase Test is used to diagnose anaphylaxis, mastocytosis (too many mast cells), or mast cell activation, when you have symptoms like flushing, nausea, throat swelling etc.

Reference Value:

<11.5 ng/mL

Note: the timing of the sample after the start of symptoms is important.

What Do the Results Mean?

  • Normal: When the sample timing is right, a normal result means the symptoms may not be caused by mast cell activation or anaphylaxis.
  • Abnormal:
    • A sudden increase in tryptase levels means the symptoms may be caused by anaphylaxis.
    • Persistently increased tryptase levels mean the symptoms may be caused by mastocytosis.

Keywords: Alpha Tryptase, Beta Tryptase, Mast Cell Tryptase, Mature Tryptase, Total Tryptase, Tryptase

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