Para 12® Extend

Para 12 Extend is a three-part differential hematology control assayed for Beckman Coulter®, ERMA, Horiba® Medical, HTI® Diagnostics, Mindray®, Nihon Kohden® and Siemens® 3-part hematology analyzers. It features vials with pierceable caps for autosampling and is available in low, normal and high levels.

Para 12 Extend is a whole blood hematology control that features three distinct populations of lymphocytes, monocytes and granulocytes and provides assay values for the three-part white blood cell differential. This control offers low, normal and high cell percentages to test the accuracy and precision of the reported white cell populations. Para 12 Extend is available in 2.5 mL or 4.5 mL vials with pierceable caps for autosampling and has a long shelf life which reduces the number of shipments, associated costs and time spent performing lot-to-lot correlation.

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Para 12 Extend three-part differential hematology control


  • Available in three clinically significant levels
  • Plastic vials with pierceable caps for analyzer autosampling
  • Compatible with the most popular three-part differential hematology analyzers
  • 30-day open-vial stability; 190-day closed-vial stability


  • Established assay ranges provide less room for error
  • Long shelf life reduces the number of shipments and associated costs
  • Fewer lot-to-lot correlations save time and resources
  • Access to STATS®, our free interlaboratory quality control program for peer group data comparison
DescriptionCatalog Number
18 x 2.5 mL (6 Low, 6 Normal, 6 High)218750
18 x 4.5 mL (6 Low, 6 Normal, 6 High)218770
6 x 2.5 mL (6 Low)218993
6 x 2.5 mL (6 Normal)218758
6 x 2.5 mL (6 High)218994
6 x 4.5 mL (6 Normal)218995
3 x 2.5 mL (Low, Normal, High)218755
3 x 4.5 mL (Low, Normal, High)218776

View the lot release schedule

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Our whole blood controls and calibrators give you confidence in the accuracy and sensitivity of your hematology analyzers without having to complete a tedious whole blood calibration procedure.

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