what is colony forming unit
CFU is an acronym (type of abbreviation) commonly seen on products containing probiotics. It stands for colony forming unit and is a measurement of the good bacteria and yeasts inside. A colony forming unit is a bacteria or yeast that is capable of living and reproducing to form a group of the same bacteria or yeasts. Microbiologists use CFU to describe the number of active, live organisms instead of the number of all the bacteria-dead, inactive and alive-in a laboratory sample.