Optochin Susceptibility Test | Optochin Disc | Optochin Susceptibility Test For S. Pneumoniae |

This test determines whether the bacterium is either sensitive (susceptible) to optochin or resistant to the chemical.
The optochin test is widely used in the form of filter paper discs, impregnated with ethylhydrocupreine hydrochloride, which are applied directly to inoculated plates before incubation. The optochin test is less time-consuming than the bile solubility test.