Fite (Leprosy) Stain
Use
The Fite (Leprosy) Stain is utilized for detection of acid‑fast organisms—particularly Mycobacterium leprae—in formalin‑fixed, paraffin‑embedded tissue. As an immunohistochemistry‑style special stain, it aids in diagnosing leprosy by highlighting acid‑fast bacilli that may not be visible on routine stains.
Special Instructions
Level of service options include Global or Tech‑Only. The preferred specimen is an FFPE tissue block; alternatively, one unbaked, unstained H&E slide plus two to three positively‑charged unstained 4‑5 µm slides are acceptable. Slides and blocks must be clearly labeled and match requisition IDs. During transport, a cold pack should be used without direct contact with the specimen; New York State clients must include date and time of collection.
Limitations
No explicit limitations described on the source page regarding sensitivity or diagnostic constraints. This stain, as a special procedure, relies on technical execution and may be limited by specimen quality or bacillary load, though no specifics are provided.
New York Approved
Methodology
Immunoassay (IHC)
Biomarkers
Result Turnaround Time
1-2 days
Related Documents
For more information, please review the documents below
Specimen
Tissue (FFPE)
Volume
Not provided
Minimum Volume
Not provided
Collection Instructions
Formalin‑fixed, paraffin‑embedded tissue block preferred; alternatively one unbaked unstained H&E slide (required) and two to three positively‑charged unstained slides (4‑5 µm) per antibody/test. Block and slides identifiers must match specimen ID on requisition.
Storage Instructions
Use cold pack for transport, ensuring it is not in direct contact with specimen; NYS clients: include date and time of collection.