The purpose of this study is to look at the relationship between growth hormones, and recovery from a TBI - traumatic brain injury. It is believed that a TBI may interfere with the body's ability to produce growth hormones. These hormones may be needed by the body for growth, mental development and sexual maturation.

Inclusion Criteria:

• This is Phase II trial-subjects have already completed Phase I.
• Traumatic brain injury (TBI).
• Results of the blood work from Phase I shows that your growth hormone levels are low.

Exclusion Criteria:

• Have not completed Phase I of the study.