Insulin-like growth factor 1 (IGF-1) measurements provide valuable insights into growth hormone (GH) status. Normal values vary considerably depending on age, sex, and pubertal stage. For instance, a pre-pubertal child might have a significantly different expected value compared to a healthy adult. These measurements are typically reported as a numerical value accompanied by the appropriate reference interval for the specific laboratory performing the analysis. This reference interval represents the statistically derived range of expected values within a healthy population, facilitating the interpretation of individual results.
Accurate interpretation of these measurements is crucial for diagnosing growth disorders in children and adults. Low levels can indicate growth hormone deficiency, while elevated levels might suggest acromegaly or gigantism. Monitoring levels over time is often necessary for proper assessment and management of these conditions. Historically, understanding this has significantly advanced the field of endocrinology, enabling more precise diagnostic and treatment strategies for growth-related disorders.