Hormonal assays are crucial for diagnosing and managing various pediatric endocrine disorders. For instance, abnormal levels of TSH and FT4 can indicate hypothyroidism or hyperthyroidism. Measuring GH levels is essential for diagnosing growth hormone deficiency, which can affect a child's growth and development. Similarly, cortisol and ACTH levels are important for diagnosing adrenal disorders like Addison's disease or Cushing's syndrome.