Levine AR, et al. - Researchers sought for the utility of initial procalcitonin (PCT) values to predict urinary tract infections (UTIs). They identified a PCT threshold <0.25 ng/ml as a strong predictor of the absence of UTI. The high negative predictive value of PCT could be valuable as an adjunct to urinalysis results to rule out UTI and facilitate noninitiation or earlier discontinuation of empiric antibiotics.