Acid Fast Bacilli stains (AFB)

Variants:

• Fite:
• Kinyoun:
• Ziehl-Neelsen:

General: AFB+ organisms include Mycobacterium spp. and Nocardia.

Fixation: Formalin.

Standard/common uses: Infectious suspicion, esp. those with caseating granulomas.

• Sputum
• Cavitary lesions
• Lung/lung biopsies