Final answer:
To separate a blood sample, Valerie can collect the blood in a tube and then centrifuge it. The centrifugation process helps to separate the different components of the blood, such as plasma. Once separated, the desired component can be harvested for further analysis.
Step-by-step explanation:
Separating a blood sample involves several steps. First, the technician needs to collect the blood sample in a tube. After a certain period, the sample is centrifuged to separate the different components. For example, if the goal is to obtain plasma, the technician might use a tube containing a specific anticoagulant. Once the centrifugation is complete, the plasma can be harvested and used for further analysis.