Which condition is NOT included in standard newborn screening tests?

• A. Cystic fibrosis
• B. Hepatitis B
• C. Galactosemia
• D. Congenital hypothyroidism

Answer: (B)

Standard newborn screening tests are designed to detect a variety of serious conditions that can affect a newborn’s health and development if not identified and treated early. Hepatitis B, while important to monitor and prevent, is not typically included in the standardized metabolic screening panels conducted immediately after birth. Instead, it is usually addressed through vaccination and risk assessment during infancy.

In contrast, cystic fibrosis, galactosemia, and congenital hypothyroidism are all conditions that are commonly screened for shortly after birth. Cystic fibrosis is screened for due to its potential to cause severe respiratory and digestive issues if left untreated. Galactosemia is included in screening since it can lead to serious complications if the baby cannot metabolize galactose properly. Congenital hypothyroidism is screened to prevent developmental delays caused by insufficient thyroid hormone.

The focus of newborn screening is primarily on metabolic disorders and conditions that can be efficiently managed with early intervention, thus ensuring a healthier outcome for the infant.