Submit a slant or at least 2.0 mL of a broth culture. Specify the type of media used.
Mixed cultures or non-viable organisms.
Organisms submitted on a Petri dish.
MTB3 replaces test code 3e, effective February 1, 2013.
•MIC testing of pyrazinamide on MTB complex performed using liquid media at pH 6. Drug concentrations for pyrazinamide include: 50, 100, 200, and 400 mcg/mL.
•There will be an additional charge for purification/isolation of cultures containing a non-acid-fast contaminant, or more than one mycobacterial species.
Wednesday & Friday
2-3 weeks upon identification of MTB complex and a pure culture.
Mycobacteriology Lab (TB)
AFB1, AFB2, AFB4
Pyrazinamide tested at the following concentrations:
MIC breakpoint for resistance is >100 mcg/mL