Tryptase (Blood)

Testing Laboratory

Auckland Te Toka Tumai | Auckland Hospital

Department

Immunology

Delphic Registration Code (Alpha Code)

TRYP

Test Code (Numeric Code)

7333

Laboratory Handling

Phlebotomy

Serum / Plasma

Transport

Ambient

Laboratory

Labplus Immunochemistry

Sample Stability

Ambient temperature (18-25°C) for 2 days; chilled (2-8°C) for a week. Longer storage at -20°C. Avoid repeat freeze thaw cycles.

Synonyms

Mast cell tryptase
Serum tryptase
Total tryptase

Turnaround Time

2 days

Test is performed Monday, Wednesday and Friday

Specimen Type

  • Plasma
  • Serum

Specimen Requirements

Tube/Container Type:

Preferred
  • SST II (Gold Cap)
Acceptable
  • EDTA (Lavender Cap)
  • Lithium Heparin - Non-gel (Green Cap)
  • Plain (Red Top)
Preferred Sample Volume (ml)

4

Minimum Sample Volume (ml)

1

No of Samples Required

1

Paediatric Specimen Requirements

Tube/Container Type:

Preferred
  • SST II (Gold Cap)
Acceptable
  • EDTA (Lavender Cap)
  • Lithium Heparin - Non-gel (Green Cap)
  • Plain (Red Top)
Preferred Sample Volume (ml)

1

Minimum Sample Volume (ml)

0.5

Additional Specimen Information

To assist in interpreting the tryptase results in suspected anaphylaxis, take at least two samples, please see diagnostic use below for further advice.

Last updated: 17/07/2026