Mast Cell Tryptase by Immunohistochemistry
Also known as: MASTCT IHC
Use
This test provides immunohistochemical detection of mast cell tryptase in tissue or cellblock specimens, enabling identification of mast cell presence and distribution for diagnostic purposes.
Special Instructions
This test is performed as a stain-and-return (technical) service only. Orders should be submitted electronically, or via ARUP Immunohistochemistry Stain Form (#32978) if electronic ordering is unavailable. Refer to the ARUP Immunohistochemistry Stain Offerings brochure for additional details.
Limitations
Specimens must be formalin-fixed (10% neutral buffered formalin) and paraffin-embedded. Cells must be prepared into a cellblock if applicable. Specimens must include a tissue block or at least 5 unstained (3–5 micron) positively charged slides (minimum 2 slides) and should not be oven‑baked if pre‑cut. Transport must avoid excessive heat. Specimens with non‑representative tissue types or depleted specimens are unacceptable.
New York Approved
Methodology
Immunoassay (IHC)
Biomarkers
LOINC Codes
- 94736-6
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen
Tissue (Fixed (Non-FFPE))
Volume
Not provided
Minimum Volume
5 unstained sections (min: 2 slides)
Container
Tissue transport kit (ARUP supply #47808)
Collection Instructions
Use tissue block or 5 unstained (3‑ to 5‑micron thick), positively charged slides (min: 2 slides); if sending precut slides, do not oven bake.
Storage Instructions
Protect paraffin block and/or slides from excessive heat.
Causes for Rejection
Non‑representative tissue type; depleted specimens
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | Indefinitely |
| Refrigerated | Indefinitely |