False-Positive Investigation Toolkit: A Resource for Mycobacteriology Laboratories

This web page includes the false-positive investigation toolkit’s job-aids, posters, and templates. These documents can be downloaded and modified for local use.

The documents should not be sent to CDC for data collection.

• Pre-Analytic Checklist
• PDF link pdf icon[PDF – 2 MB]

• Prevention of False-Positive Results During Molecular Testing
• PDF link pdf icon[PDF – 337 KB]

• Situations or Scenarios That Might Initiate a Laboratory Investigation
• PDF link pdf icon[PDF – 314 KB]

• Laboratory Information to Monitor When Results Have the Potential to Be False-Positive
• PDF link pdf icon[PDF – 343 KB]

• Potential Areas to Examine if a False-Positive or Contamination is Suspected
• PDF link pdf icon[PDF – 675 KB]

• Do’s and Don’ts to Prevent Cross-Contamination
• Small Version pdf icon[PDF – 422 KB] (8 1/2 x 11 inches)
• Large Version pdf icon[PDF – 419 KB] (11 x 17 inches)

• Do’s and Don’ts to Prevent False-Positive Acid-Fast Bacilli (AFB) Smears
• Small Version pdf icon[PDF – 443 KB] (8 1/2 x 11 inches)
• Large Version pdf icon[PDF – 446 KB] (11 x 17 inches)

• False‐Positive Patient Specimen Data Collection Log
• Excel link excel icon[XLS – 41 KB]

• False-Positive Investigation Form
• PDF link pdf icon[PDF – 455 KB]