Final answer:
A stool culture is not consistently performed as part of the sepsis workup unless there is a specific reason to suspect a gastrointestinal infection. CBC with WBC differential, blood cultures, and urine cultures are the standard practices in the workup for sepsis.
Step-by-step explanation:
Among the options listed which is not consistently performed as part of the workup for sepsis, a stool culture (Option B) is not routinely done unless there is a specific reason to suspect gastrointestinal infection or involvement. In the case of sepsis workup, clinicians typically perform a CBC (complete blood count) with WBC (white blood cell) differential, as elevated white blood cells can be indicative of an infection (Option A). Blood cultures (Option C) are essential for detecting bacteria in the bloodstream.
Urine cultures (Option D) are also common, as urinary tract infections can be a source of sepsis. Stool cultures would be more specific to gastrointestinal symptoms or when illnesses like shigellosis are suspected, which is characterized by the presence of red and white blood cells in stool samples.