The page below is a sample from the LabCE course Hemoglobinopathies: Hemoglobin S Disorders. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Densitometer Tracing of Various Hemoglobins

The densitometer tracing shown below demonstrates the pattern for blood containing some A2 and S, along with greater amounts of F and A. Other hemoglobins that migrate with A2 and S are indicated.