Monoclonal Reagent Technology is in our Blood

Confidence in your blood bank reagents is built on trust in your manufacturer’s experience.
Siwa has that experience.

Recombinant Monoclonal Blood Grouping Reagents

Introducing the First FDA Licensed Recombinant Monoclonal Blood Grouping Reagents, Representing the Next Generation of Blood Grouping Reagents.

SIWA is your only source for both IgM Anti-Fya AND IgM Anti-Fyb
SIWA Recombinant Monoclonal Blood Grouping Reagents

“It’s about Time, Your Time”

“Takes less than 1 minute to perform a single test”


  • One drop of Duffy blood grouping reagent
  • One drop of red cell suspension
  • Spin and read

To place an order or contact your Account Development Representative please contact customer service by phone, fax, or email and we will provide you with both pricing and shipping information.

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Fulfilling the Need for New Monoclonal Blood Typing Reagents

A need for new monoclonal blood typing reagents is evidenced by the age and declining performance of cell lines used in the manufacture of many blood typing reagents currently on the market.

Realizing this, Siwa scientists dedicated themselves to developing new monoclonal antibodies with improved performance characteristics.

Siwa’s new antibodies are expressed from state-of-the-art-recombinant cell lines and have been incorporated into new blood typing reagents for tube testing.

Siwa is now FDA Licensed for our Recombinant IgM Monoclonal Anti-Fya and Recombinant IgM Monoclonal Anti-Fyb. Reagents with other specificities are in our development pipeline.