Rocklin medical company to close and lay off 68 employees — including scientists

Cell Marque Corp.'s closure will play out between February and September 2026.

Published on December 5, 2025

Building exterior

Cell Marque in Rocklin.

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The Abridged version:

  • A Rocklin medical manufacturer is closing next year, eliminating 68 jobs.
  • Cell Marque Corp. manufactures medical testing kits used widely in medical diagnostics, especially biopsies that can detect cancer.

A Rocklin medical test kit manufacturer will permanently close its doors, costing 68 jobs early next year, according to a state filing posted Friday.

Cell Marque Corp. filed the required workforce reduction notice with the state Employment Development Department. The layoff list at the facility on Sierra College Boulevard includes 13 scientists.

The company manufactures medical testing kits used widely in medical diagnostics, especially biopsies that can detect cancer.

The layoff notice said the plant closure will play out over the first nine months of 2026, starting in February and ending on in early September.

A company representative referred questions to its communications team, which has not provided comment.

Dan Smith is news editor of Abridged.

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