“…The coupling of the clean-voided technique and quantitative bacteriology in the female patient avoids the potential hazard of catheterization.1, 2,4,7,14,16 It is generally assumed that distinction between true bacilluria and con- tamination can readily be made by this technique. However, very little information is available with regard to the incidence of sterile urine cultures in female subjects showing no evidence of urinary tract infection.…”