Three examples of artefactual "pseudo-abnormal" hemoglobins were observed in the course of starch block electrophoresis analysis of over 400 specimens. In fresh samples from the same patients, these components were no longer demonstrable. It is suggested that repeated examination with different blood specimens should be done before an unusual component is accepted as a true hemoglobin variant.

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© 1961 by American Society of Hematology, Inc.
1961
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