Automatic operational control based on detected environmental state

A method comprising:

• detecting a condition including one or more of a change in flow of a fluid and a change in a composition of the fluid;
• issuing an alarm in response to the condition detected;
• lowering a flow rate in response to detecting the change in the flow of the fluid, wherein lowering the flow rate includes lowering a speed of a centrifuge to keep a temperature of the fluid at a particular level;
• attempting to restart a donation process and increase the flow rate after lowering the flow rate;
• ceasing operation of a donation process in response to detecting a pressure above a threshold pressure as the change in the flow of the fluid, the pressure above the threshold pressure indicating that the centrifuge is full;
• and
• reversing the flow of the fluid in response to ceasing operation of the donation process, reversing the flow of the fluid including returning the fluid to a donor, wherein
• the issuing the alarm comprises using one or more of a sound, lights, and a graphical user interface (GUI),
• the GUI provides one or more of information and instructions regarding the condition detected,
• the change in flow is associated with a collapsed vein,
• the GUI provides instructions to check a needle inserted in the donor, and
• the speed of the centrifuge is lowered from about 5,000 rpm to about 1,950 rpm.