How to quantitatively report Acid Fast Bacilli in stained smear

If definite Acid Fast Bacilli are seen, report it as AFB positive. But, it is better to report the result quantitatively as follows:

  • > 10 AFB/high power field                –>+++
  • 1-10 AFB/high power field                –> ++
  • 10-100 AFB/100 high power fields     –> +
  • 1-9 AFB/100 high power fields           –> exact number

Important: if no Acid Fast Bacilli (AFB) is seen, write the result as ‘no AFB seen’ and never write negative.

Acid Fast Bacilli

Acid Fast Bacilli

Share This Post

Related Articles

Leave a Reply

You must be Logged in to post comment.

© 2019 Medical Laboratories. All rights reserved. Site Admin · Entries RSS · Comments RSS
Powered by WordPress · Powered by Medical Labs