All of the following apply to a double red cell unit apheresis collection except:

Apheresis collection is a process that allows for the donation of specific blood components, such as double red blood cells, by separating these components from whole blood. In the context of double red blood cell unit collection, certain criteria related to donor characteristics and post-donation recovery must be met to ensure the safety and health of both the donor and the recipient.

The requirement specifying a minimum hematocrit level is indeed critical for various blood collections, including whole blood and specific components like red blood cells. However, the threshold for hematocrit in a double red cell apheresis collection is actually higher than 38% to ensure that donors have an adequate red blood cell mass both pre- and post-collection.

Conversely, the criteria for weight and height are essential for ensuring that the donor has sufficient blood volume to safely donate double red cells without adverse effects. Female donors must meet a weight requirement to ensure they have enough volume, and there is a specified height for male donors as part of the overall qualification standards. The deferral period after donating double red cells is indeed also specified to allow for recovery, generally set at 16 weeks.

Thus, the understanding of these parameters clarifies why the stipulation about the hematocrit needing to be