Fig. 3From: Establishment and evaluation of an indirect ELISA for detection of antibodies to goat Klebsiella pneumoniaDetermination of the cut-off value for the indirect ELISA. The average value plus the standard deviation of 3 times was used as the cut-off value, which was found to be 0.28. That is, if the serum OD value of the test is ≥0.28, it is judged to be positive for Klebsiella pneumoniae antibody; OD values < 0.28 are judged to be negativeBack to article page