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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: Pediatr Nephrol. 2013 Jun 5;29(7):1139–1149. doi: 10.1007/s00467-013-2513-9

Table 1.

Urine parameters influencing UTI susceptibility

Urine parameter UTI relevance
pH Optimal bacterial growth in urine occurs between a pH 6–7.
Urea High urea concentrations are associated with inhibition of bacterial growth.
Glucose Glucosuria can promote bacterial growth.
Calcium Idiopathic hypercalcuria increases the risk of UTIs.
Iron Increased iron promotes bacterial growth in urine.
Osmolality Bacterial growth is inhibited when the urine osmolality is < 200 mosm/L or > 1200 mosm/L