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. 2017 Dec 15;114(50):866–873. doi: 10.3238/arztebl.2017.0866

eTable 2. Reference values for diagnosis of various urinary tract infections and asymptomatic bacteriuria (e27).

Diagnosis Demonstration of bacteria Urine sampling
Acute uncomplicated cystitis in women 103 CFU/mL Midstream urine
Acute uncomplicated pyelonephritis 104 CFU/mL Midstream urine
Asymptomatic bacteriuria 105 CFU/mL ● in women:
Demonstration in two consecutive midstream urine cultures
●In men:
Demonstration in one midstream urine culture
In sampling via catheter and one single bacterial species:10 2 CFU/mL

CFU, Colony-forming units