Coagulation Factors

May, 2021 Quick Question: Flaujeac Factor

This month’s Quick Question is for historical fun, looking back at some of the original coagulation factor names that first used the names of the first families with the factor’s deficiency. Recall the name Flaujeac factor and identify what we call it today.

Coagulation Factors

Coagulation Overview

In response to requests, we’ve posted our latest audio PowerPoint module, “Coagulation Overview.” Please visit our growing list of recently produced free modules under the menu heading, Educational Modules.

Coagulation Factors

Chromogenic Factor VIII Assay FDA-Cleared

On Monday, July 20, Fritsma Factor sponsor Precision BioLogic Inc. announced US FDA 510[k] clearance of their CRYOcheck™ Chromogenic Factor VIII assay. The assay had been previously approved in Canada, the European Union, Australia, and New Zealand. The assay boasts a test range from 0–200% FVIII using one standard curve and a limit of quantitation […]

Bleeding Disorders

Thrombokinase

A high school [secondary, prep school] teacher asked me [Geo] for a definition of thrombokinase. It sounded familiar, but I couldn’t place it so I checked some online dictionaries. One wrote it was the same as platelet factor 3, which the dictionary misnamed platelet factor III; another said it was activated factor X, and yet […]

Coagulation Factors

Choosing Wisely

George presents “Medical Laboratory Scientists Choose Wisely” today, Friday, November 15 at the Clinical Laboratory Managers Association of Georgia and Alabama, hosted by the University of Alabama at Birmingham Clinical Laboratory Management Symposium, UAB School of Health Professions. George’s talk describes the American Board of Internal Medicine Foundation’s Choosing Wisely initiative. Click or tap here […]

Coagulation Factors

Assaying Factor Concentrates

A pre-publication article, Young G, Perry D, The International Prophylaxis Study Group (IPSG). Laboratory assay measurement of modified clotting factor concentrates: a review of the literature and recommendations for practice. J Thromb Haemostas pre-publication, 1-22-19 provides advice on how to measure extended half-life and B-domain-deleted factor concentrates VIII and IX. The article illustrates the wide […]

Bleeding Disorders

Coag Quandaries

George has attached Anne Paxton’s article, Navigating the Quandaries of Coagulation Testing, (click or tap) featuring Drs. Michael Laposata, Dot Adcock, and Kristi Smock. The article features the need for laboratory-clinician communication.

Anticoagulant Therapy

Quick Question: Extrinsic Pathway

Our September, 2018 Quick Question was a quiz with one correct answer addressing our knowledge of the coagulation cascade: Which coagulation factor is the first activated in the extrinsic pathway? With 144 responding, the answers were: Factor XII: 16 (11%) Factor IX: 9 (6%) Factor VII: 105 (73%) Prothrombin: 14 (10%) Congratulations to the overwhelming […]

Coagulation Factors

Minimally Prolonged PT: Solution

Referring to our post of August 10, 2018 entitled Minimally Prolonged PT, Dr. Laposata reviewed the patient’s consistently, though slightly prolonged, PT results, and considered a factor VII deficiency. It turns out the patient’s factor VII level was 40%, found also in some first-degree relatives. It may not be that a factor VII level of […]

Bleeding Disorders

Quick Question: Extrinsic Pathway

For our September, 2018 Quick Question, here is a simple quiz question with one correct answer. This is your opportunity to check your “coagulation casecade” knowledge. Feel free to check your undergraduate coag course notes or check with your coagulation consultant!

Coagulation Factors

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George Fritsma is a medical laboratory scientist, educator, and author. George is a member of the International Society on Thrombosis and Hemostasis, the International Society for Laboratory Hematology, and the American Society for Clinical Laboratory Science.

Cheat Sheets from George

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