Omaha, NE – Streck’s Sperm-Chex™ and Sperm-Chex™ Post VC are now assayed for the Makler® Counting Chamber.

Sperm-Chex is the only sperm count control on the market with stabilized sperm cells. Sperm-Chex has two clinically significant levels of control to simulate the sperm cell concentration that technologists encounter in patient samples. It has the same chamber loading and optical characteristics as a patient sample. Sperm-Chex verifies the sperm analysis process and tests the technologist’s proficiency in sperm cell quantification and qualification.

Sperm-Chex Post VC is the only post-vasectomy sperm count control with stabilized sperm cells. Sperm-Chex Post VC is a positive/negative post-vasectomy sperm count control with the same chamber loading and optical characteristics as a patient sample. Sperm-Chex Post VC validates the post-vasectomy sperm count procedure.

The products are stable for 42 days open-vial and 12 months closed-vial when stored at 2°C to 10°C.

Streck also offers Cell-Chex, a multi-level manual body fluid control to verify hemacytometer total RBC and WBC counts, urate and CPPD crystal identification, and manual differential procedures. The white blood cells in Cell-Chex are human to better resemble patient samples. When stained in the same manner as a patient sample, the technologist can differentiate granulocyte, lymphocyte and monocyte populations.

About Streck, Inc.
Established in 1971, Streck develops and manufactures products for clinical and research laboratories. Streck’s passion for innovation, quality and service has allowed the organization to become a world leader in the development of quality control and diagnostic products that help laboratories ensure accurate and timely results for patients. Streck offers the industry’s leading automated erythrocyte sedimentation rate instrument and is a worldwide supplier of blood collection tubes that standardize methods for sample collection, stabilization and transportation. Expanding product lines include flow cytometry, body fluids and urinalysis with emerging products being developed for the burgeoning field of molecular diagnostics. For more information, visit

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