Urinary Tract Infections in Adults Urine culture and antibiotic sensitivity Test (ABST) should be performed except in non pregnant women with acute cystitis. Treat initially with following antibiotics until culture and ABST are available and change antibiotics if necessary. Urinary tract infection (UTI) is considered when urine culture yields siginificant concentration of uropathogenic bacteria. Patients with bacteria infection usually have bacterie > 105 cfu/mL. However symptomatic UTI or partially treated UTI should be considered when culture shows bacteria 10 3 - 10 5 CFU/mL. Commonly isolated organisms include: Escherichia coli, Klebsiella spp., Enterococci, Proteus mirabilis, pseudomanas aeruginosa, Staphylococcus saprophyticus. Klebsiella spp Enterococci pseudomanas aeruginosa Proteus mirabilis staphylococcus saprophyticus Escherichia coli 01. Acute cystitis (...