Periodic Acid-Schiff Stain (Fungus), technical only
Use
The PAS-fungus special stain is specifically designed to detect fungal organisms by highlighting fungal cell walls. PAS-F is a valuable diagnostic tool in pathology for diagnosing fungal infections, especially those caused by Candida, Aspergillus, and Histoplasma species. This test is limited to technical components, without pathologist read.
Special Instructions
The stated turnaround times are for clinical use and may change based on biopharma protocol requirements. Final TATs will be specified in the biopharma study contract. Specimens should be tested within 3 months if stored in ethanol after formalin fixation. Use positively charged glass slides to prevent background staining and tissue loss.
Limitations
This test does not include a pathologist read. Specimens must be fixed in 10% NBF or B plus; other fixatives will be rejected. Fresh tissues have a stability of up to 72 hours. Unstained slides are stable indefinitely, provided they are not baked.
Methodology
Anatomic Pathology
Biomarkers
Result Turnaround Time
2 days
Related Documents
For more information, please review the documents below
Specimen
Tissue (FFPE)
Volume
Not provided
Minimum Volume
Not provided
Container
FFPE Block
Collection Instructions
The fixative should be at a 20:1 fixative to tissue ratio, using 10% neutral buffered formalin for 6-72 hours, with 48-72 hours preferred. Specimens can be transferred to 70% ethanol for transport after fixation.
Storage Instructions
Store at 15°C to 25°C. Transport using a refrigerated gel pack to prevent temperature extremes, without freezing.
Causes for Rejection
Specimens not fixed in 10% NBF or B plus will be rejected.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | Indefinite |