Manual Tilt Tube PT - The Fritsma Factor

Jun 2 2025

George Fritsma

Here is an open-access editorial commenting on the tilt-tube PT requirement for establishing the reagent thromboplastin ISI. Favaloro EJ. Manual tilt tube method for prothrombin time: a commentary on contemporary relevance. Clin Chem Lab Med. 2025;63:1239–42. doi: 10.1515/cclm-2025-0157. PMID: 39985393.

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George Fritsma is a medical laboratory scientist, educator, and author. George holds faculty appointments with Rutgers University and Michigan State University, and is a member of the International Society on Thrombosis and Hemostasis, American Association of Clinical Chemists, and American Society for Clinical Laboratory Science.

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