To identify any demographic factors or urinalysis (UA) results that predict the development of an adverse event (AE) within 30 days of urodynamic studies (UDS). All 18 – 89-year-old female patients at two tertiary medical centers who had a current procedural terminology code corresponding to complex UDS from 01/01/2008 to 12/31/2017 were identified. Only those with a UA on the day of UDS were included. Data collected included patient demographics, medical conditions known to be associated with urinary tract infections (UTI), whether the patient reported common symptoms of UTI at the pre-UDS visit, the UDS indication and final diagnosis, the UA result, and whether an antibiotic was administered at the time of the UDS. We also collected data on the number of UDS canceled due to an abnormal UA result, as well as the development of an AE within 30 days of UDS, including UTI, fever, pyelonephritis, sepsis, hospitalization, and death. Pairwise analysis was performed between groups using the Wilcoxon rank-sum test. Logistic regression was performed using only those variables which were found to be statistically significant on pairwise analysis. Six hundred and two subjects met all criteria. Three patients had UA results which prompted the attending physician to reschedule the UDS and empirically treat for UTI (A: +nitrite, B: +++blood, +leukocyte esterase, C: +nitrite). Only two of the rescheduled UDS had UA performed, so only 601 subjects were included in the final analysis. The only AE identified in the final cohort was the development of UTI (n=23). Variables found to be associated with higher rates of UTI following UDS included higher parity (3 (3-4) vs 2 (2-3), p=0.008) and having any prolapse (n=21 (91.30%) vs 388 (67.13%), p=0.049). There was no difference in rate of UTI based on any UA result, regardless of whether the patient was provided with antibiotics (Table 1). Of particular interest are those patients who had either positive nitrites or positive blood/LE, did not receive antibiotics, and yet still did not have an increase in the rate of AE. On simple regression the only variable found to be statistically significant for AE was experiencing suprapubic pain at the visit prior to the UDS (aOR 17.25, (95%CI 1.52 – 196.69), p=0.022). Performing UA on asymptomatic patients prior to UDS does not seem to prevent post-UDS morbidity.