^a Tested in dextrose 5%.

^b Tested in sodium chloride 0.9%.

^c Tested in both dextrose 5% and sodium chloride 0.9%.

^d Imipenem component. Imipenem in a 2:2:1 fixed-ratio concentration with cilastatin and relebactam.

^e Piperacillin component. Piperacillin in an 8:1 fixed-ratio concentration with tazobactam.

^f Test performed using the formulation WITHOUT edetate disodium.