FITE'S METHOD
FOR ACID FAST ORGANISMS.
DRAFT COPY ONLY.
(Procedure 79).
http://www.netautopsy.org/axsop/axsop079.htm


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United States Government Work, uncopyrighted, public-domain, DRAFT COPY ONLY. This document does not necessarily represent the views or policies of any United States Government agency. This document is provided "as is", without warranty of any kind, express or implied, including but not limited to the warranties of merchantability, fitness for a particular purpose and non-infringement. In no event shall the authors be liable for any claim, damages or other liability, whether in an action of contract, tort or otherwise, arising from, out of, or in connection with the document or the use or other dealings made with the document.



PRINCIPLE OF THE TEST.

      To stain paraffinized tissue sections for Acid Fast Bacilli, required in the diagnosis of certain diseases encountered in anatomic pathology, especially tuberculosis and Mycobacterium avium-intracellulare.



SPECIMEN REQUIRED.

      All human tissue excised at surgery, outpatient clinics, and postmortems, fresh or in fixative, along with a filled-out Tissue Examination Form (U. S. Standard Form 515, USSF515).



REAGENTS, INSTRUMENTATION.


      10% buffered neutral formalin. Paraffin sections at 6 microns. Xylene-peanut oil solution. Peanut oil. Xylene.



STEP-BY-STEP DESCRIPTION.


FIXATION: 10% buffered neutral formalin.

TECHNIQUE: Cut paraffin sections at 6 microns.

SOLUTIONS: XYLENE-PEANUT OIL

Peanut oil............................... 1 part.

Xylene................................... 2 parts.



REFERENCES.


1. Swisher BL.
Microorganisms. Chapter 16, pp. 325-344.
In: Bancroft JD, Gamble M. Theory and Practice of Histological Techniques. Fifth Edition. Edinburgh: Churchill Livingstone. 2002;:325-344. ISBN 0-443-06435-0, 796 pages.

2. Prophet EB, Mills B, Arrington JB, Sobin LH, eds.
Laboratory Methods in Histotechnology.
Washington, DC: Armed Forces Institute of Pathology. 1992;:.
ISBN 1-881041-00-X, 278 pages.

3. Mikel UV, ed.
Advanced Laboratory Methods in Histology and Pathology.
Washington, DC: Armed Forces Institute of Pathology. 1994;:.
ISBN 1-881041-13-1, 254 pages.