IGF1 and endocrine system disorder: With a wide range of ICU days by which endocrinopathies were identified, lab monitoring in patients with an ICU LOS greater than seven days and debilitation despite the provision of enteral and/or parenteral nutrition may be reasonable. Based on the findings of this study and the available literature, the appropriateness of obtaining both a somatomedin C and total testosterone level to define endocrinopathies in all at risk patients is questionable.