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Shamee Shastry: Lewis Antigen Elution and the Challenge of False-Negative Reactions
Jun 23, 2026, 10:48

Shamee Shastry: Lewis Antigen Elution and the Challenge of False-Negative Reactions

Shamee Shastry, Professor and Head of the Department of Immunohematology and Blood Transfusion at Kasturba Medical College, Manipal, shared on LinkedIn about a recent article she and her colleagues co-authored, published in Transfusion and Apheresis Science, adding:

”Are you an immunohematologist?

This observation may change your interpretation!

A rare but critical observation from our Centre of Excellence in Immunohematology at Kasturba Medical College, Manipal:

Elution of Lewis antigens from reagent red cells can lead to antibody misidentification and diagnostic ambiguity.

What this means:

  • Not all panel cell antigens are stable
  • False-negative reactions can mislead interpretation
  • Quality control must go beyond routine checks.”

Title: Eluted blood group antigens: A diagnostic challenge in red cell antibody identification – A case series

Authors: Sampreeta Pradhan, Shamee Shastry, Ganesh Mohan, Deepika Chenna, Deep Madkaiker

Shamee Shastry: Lewis Antigen Elution and the Challenge of False-Negative Reactions

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