In infants or young children with fever, laboratory analysis of the child's urine is needed to diagnose urinary tract infection. Children often are asymptomatic other than fever, or cannot describe the typical symptoms of pain or burning with urination. In children that cannot urinate on command, transurethral bladder catheterization is most often used. However, this method has high rates of sample contamination.<unk>  has the lowest rates of contamination, but is often viewed as too invasive by practitioners and parents. In some children, urethral catheterization is not appropriate. In uncircumcised boys with tight phimosis or girls with labial adhesions,<unk>  is safe, fast, and likely to yield an uncontaminated urine specimen. Since<unk>  is more invasive than transurethral catheterization, some medical professionals use<unk>  after a urine sample obtained with transurethral catheterization shows bacterial growth and there is concern for contamination.
Suprapubic aspiration
Penrose drain
Suprapubic cystostomy
Foley catheter
Perineal dilator
Transurethral incision of the prostate
Cystography
Retrograde urethrogram