Acute, uncomplicated pyelonephritis in women: > 10 4 / mL Complicated UTI: > 10 5 / mL in women; or > 10 4 / mL in men or from a catheter-derived specimen in women Acute urethral syndrome: > 10 2 / mL of a single bacterial species Any positive culture result, regardless of colony count, in a sample obtained via suprapubic bladder puncture should be considered a true positive.