Hello doc im male age 18 year old i have cbc in my cbc report all things are normal bt in wbc flag i have imature cell left shift wat does it mean?

Probably nothing: Flags very often mean nothing in the lab. If you feel well, ignore it. It may be the calibration of the machine, you may have Pelger-Huet non-disease, or you may simply be one of the several percent of healthies who fall outside of a particular reference range. Flags go up all the time in lab work so as not to miss things -- most aren't real concerns.