Kinyoun technique

Definition

The Kinyoun technique is a cold acid-fast staining method used to detect acid-fast bacteria, such as Mycobacterium species. It does not require heating the slide during the staining process.

5 Must Know Facts For Your Next Test

1. Developed by Joseph J. Kinyoun in 1915 as an alternative to the Ziehl-Neelsen stain.
2. Uses a higher concentration of carbol fuchsin and phenol to penetrate the waxy cell walls of acid-fast bacteria without heat.
3. Commonly used for identifying Mycobacterium tuberculosis and other Mycobacterium species in clinical samples.
4. Decolorization is achieved using an acid-alcohol solution, followed by a counterstain like methylene blue or brilliant green.
5. Results in acid-fast bacteria appearing red against a blue or green background.

Related terms

Ziehl-Neelsen stain: A traditional acid-fast staining method that requires heating slides during staining.

Acid-Fast Bacteria: Bacteria with high lipid content in their cell walls, making them resistant to decolorization by acids.

Carbol Fuchsin: A dye used in both Kinyoun and Ziehl-Neelsen stains to penetrate bacterial cell walls.