after adding a few drops of methyl red to a tube of bacteria

Last updated: 5/13/2023

after adding a few drops of methyl red to a tube of bacteria in the MRVP broth you do not see any red or pink color in the broth this tells you this is a positive result for the MR test this is a negative result for the VP test bacteria turned the glucose in the broth into a lot of acids this is a negative result for the MR test Othis is a positive result for the VP test