Miller J M
South Med J. 1983 Aug;76(8):962-3, 965. doi: 10.1097/00007611-198308000-00004.
In pregnancy, sickle cell trait is associated with an increased incidence of urinary tract infection. Hemoglobin S levels vary from 25% to 44%. Patients with lower hemoglobin S levels are less likely to have urinary tract infections than patients with higher levels of hemoglobin S.
