Retic-Chex® II

Retic-Chex II is a tri-level whole blood control with reticulocytes used to verify the accuracy and precision of manual reticulocyte counting methods.

Retic-Chex II whole blood hematology control

Retic-Chex II is an assayed, whole blood control that can be used to evaluate manual reticulocyte counting methods. Designed to resemble the appearance of patient samples, Retic-Chex II is available in three clinically significant levels and has a long shelf life which reduces the number of shipments, associated costs and time spent performing lot-to-lot correlation. It is packaged in 1.0 mL squeeze dropper vials for accurate sample dispensing, eliminating the need for manual users to pipette.

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Retic-Chex II tri-level hematology control


  • Can be used for manual reticulocyte counting
  • Available in three clinically significant levels
  • Packaged in 1.0 mL plastic squeeze dropper vials for accurate dispensing
  • 14-day open-vial stability; 75-day closed-vial stability


  • Established assay ranges provide less room for error
  • No pipetting necessary for manual methods
  • 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
4 x 1.0 mL Retic-Chex II (Level 1)285104
4 x 1.0 mL Retic-Chex II (Level 2)285204
4 x 1.0 mL Retic-Chex II (Level 3)285304
6 x 1.0 mL Retic-Chex II (Level 1, 2 & 3)285106

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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