ATI RN Comprehensive Predictor Practice Test 2026 – Complete Exam Prep

Parents should not give their baby 2 ounces of water before the genetic screening test because it can dilute the blood sample that will be collected during the screening. This type of screening often requires a precise and concentrated sample of blood to accurately detect any genetic conditions. Introducing water could interfere with the results, leading to potential inaccuracies in the testing process.

In contrast, offering 2 ounces of formula or breast milk is typically acceptable before the test, as these are standard feeds that do not compromise the integrity of the blood sample. Solid foods are generally not appropriate for very young infants who might not be ready for them, but they won't have the same impact on a blood test as water would. Ensuring that the sample is not diluted is crucial for the reliability of the genetic screening results.