<prompt> Which is the most common contaminant in a positive blood culture?Staphylococcus epidermidisBacteriodesCandidaE.coli  <response>: Among the options provided common contaminant in positive blood culture is Staphylococcus epidermidis Coagulase negative staphylococcus- CONS followed by other normal skin flora other bacteria like Propionibacterium spp and Candida species.Ref: Ananthanarayan 9th edition, p 622 