In which of the following ways is CLED medium better than McConkey agar for UTI (AIIMS NOV. 2020)
CLED ( Cysteine Lactose Electrolyte Deficient Media )- Inhibits growth of other commensals & allows staphylococcus and Candida to grow. It enhaces the growth of dwarf colonies of coliforms d/t presence of cysteine McConkey and CLED both prevent swarming of Proteus and differentiate between LF and NLF. Gram positive organisms usually can't grow in McConkey, it is selective for gram negative organisms.
It differentiates lactose fermenters from Non-fermenters
It prevents proteus swarming
Inhibits growth of other commensals
It allows staphylococcus and Candida to grow
Lab Investigations