Special Stain, Periodic Acid‑Schiff (PAS), Fungus
Also known as: PASF SS
Use
This test is a histochemical special stain (Periodic Acid‑Schiff, PAS) used specifically for the detection of fungal elements in tissue specimens. As a stain-and‑return (technical) service, it allows pathologists to visualize polysaccharides, mucopolysaccharides, and fungal components which appear magenta after staining, aiding in diagnosis of fungal infections within tissues.
Special Instructions
Not provided.
Limitations
Cannot be used on frozen specimens; frozen is unacceptable. Unacceptable conditions include nonrepresentative tissue or depleted specimens. Specimens must be correctly fixed and embedded; otherwise staining quality may be compromised. As a technical stain service only, interpretive expertise is required by the submitting facility.
New York Approved
Methodology
Other
Biomarkers
LOINC Codes
- 39575-6 - Fungus Spec PAS Stn
Result Turnaround Time
1-5 days
Related Documents
For more information, please review the documents below
Specimen
Tissue (FFPE)
Volume
Not provided
Minimum Volume
Min: 1 slide
Container
Tissue block or slides in tissue transport kit (ARUP supply #47808)
Collection Instructions
Transport tissue block or 2 unstained (3- to 5-micron thick sections), positively charged slides in a tissue transport kit.
Storage Instructions
Room temperature or refrigerated; ship in cooled container during summer months.
Causes for Rejection
Nonrepresentative tissue type; depleted specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | Indefinitely |
| Refrigerated | Indefinitely |
| Frozen | Unacceptable |
Other tests from different labs that may be relevant