Problem: You have just collected three tubes of blood for a CBC, PT/PTT, and a comprehensive panel. The PT/PTT is STAT, but the courier is stuck in traffic and will not be there for 60 minutes. Provide an initial response that addresses the following:
1. What is the additive in each tube collected?
2. Describe how each tube should be processed and stored and how incorrect processing and storage can cause inaccurate results.