CRP and bacterial urinary tract infection: Studies in adults showed that CRP and PCT levels in parenchymatous infections (acute pyelonephritis, prostatitis and epididymitis) are increased.25 26 Using a PCT-based algorithm in UTI treatment was shown to reduce antibiotic exposure in adults.27 In a subgroup analysis including elderly (>70 years of age) with lower UTI antibiotic exposure was reduced as well, suggesting a potential role for PCT.