Final answer:
The screening test for sickle cell anemia is hemoglobin electrophoresis, which separates different types of hemoglobin based on their electrical charge.
Step-by-step explanation:
The screening test for sickle cell anemia is hemoglobin electrophoresis. Hemoglobin electrophoresis is a laboratory technique that separates different types of hemoglobin based on their electrical charge. By analyzing the pattern of hemoglobin bands, the presence of abnormal hemoglobin, such as hemoglobin S (HbS) in sickle cell anemia, can be detected.