AFB Susc. Ethambutol

What is the AFB Susceptibility Ethambutol Test?

This test determines the susceptibility of Mycobacterium tuberculosis to Ethambutol, a first-line anti-TB drug.


Who should get this test?

This test is recommended for:

Patients with confirmed TB infection.
Individuals who are not responding to first-line TB treatment.



How is the test performed?

A cultured isolate is tested for growth inhibition in the presence of Ethambutol.


What do the results indicate?


Susceptible: The bacteria are sensitive to Ethambutol.
Resistant: Ethambutol may be ineffective, requiring alternative treatment.



Why is this test important?

Determining susceptibility helps tailor TB treatment and prevent drug resistance.