Identifying characteristics associated with genetic testing in the NICU.

Genetic testing is an integral part of Neonatal Intensive Care Unit (NICU) care. There are reported disparities in both NICU care and genetic testing related to race and language spoken. Identifying characteristics associated with genetic testing in NICUs could help detect patients who may benefit from genetic testing, as well as any current disparities. We sought to analyze characteristics of NICU admits who had genetic testing in general and specific test categories. Characteristics were requested from the Children's Hospital Neonatal Consortium database for patients admitted to Primary Children's Hospital's NICU in 2022. Statistical analysis was performed to determine if characteristics were more likely to result in genetic testing and if differences between those with genetic testing and those without were significant. All genetic test types were more likely ordered with genetic consultations. Cytogenetic testing was more likely in patients with a cardiology consult or who were Spanish-speaking. Patients who were of Hispanic origin were more likely to have molecular testing ordered. The average number of specialty consults for a patient was higher for those with genetic testing. Premature and low birthweight infants had longer time to genetic test ordering. No disparities were identified, which could be due to a small, homogenous sample. The differences with Spanish-speaking patients and those with mothers of Hispanic origin could be due to many factors, including consenting practices. It may be difficult to identify infants who might need genetic testing when they are low birthweight and/or premature. It is important to continue monitoring for differences in ordering practice for this vulnerable population.