In hematology, we include both hemoglobin testing and white blood cell count (WBC). Hemoglobin testing in combination with WBC count, performed at the point of care, will add information to the clinical evaluation of the primary care patient.

By using these two tests, a full CBC ordered from the laboratory would only be required if anemia, an abnormal WBC count is detected or when clinical signs and the patient’s history indicate the need for further investigation.