Adult Hemoglobin Electrophoresis (Hb-Elec) test is a laboratory test that separates different types of hemoglobin present in the blood by using an electric current. It is used to detect and diagnose genetic disorders of hemoglobin such as sickle cell anemia and thalassemia.

Pre-test preparation:

No special preparation is usually required for this test.

Testing method:

• A small sample of blood is taken from a vein in the arm using a needle and syringe.
• The sample is then sent to a laboratory for analysis.
• The blood sample is applied to a gel, and an electric current is applied to the gel.
• As the current is applied, the different types of hemoglobin move through the gel at different rates, based on their charge and size, and separate into bands.
• The separated bands are then visualized and compared to a reference standard to identify the types and amounts of hemoglobin present in the sample.

Common symptoms for prescribing this test: