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Blood Bank Guy Podcasts and Podlets are educational videos covering transfusion-related topics.
Available Now:
   What the H? (Bombay) Podcast
   Acquired B Podlet


Download Dr. Chaffin's 2014 blood bank review notes. Check out the topic discussions on the Acquired B Phenotype, massive transfusion, polyagglutination, and anti-G.

A glossary of Transfusion Medicine Terms is available for your reference.


Ask The Experts your questions about blood group antigens, antibodies, and problems.


Test your knowledge in the BBGuy quiz section.


Common questions received from site visitors and attendees at review courses.

Osler Course

Thinking of attending the Osler course?

Already attended the Osler course?

Basic Site Tour


I understand that many of you love to take quizzes to review information as well as to learn new stuff. For that reason, the Blood Bank Guy quiz page has been greatly expanded, and we are not done yet! We are always are working on adding new quizzes for your viewing pleasure!

Video Presentations

Several times a year, I will post an approximately 60 minute podcast that covers a single topic in blood banking/transfusion medicine. The podcasts will cover a wide variety of topics, from transfusion of various blood products (like platelets or plasma) to technical things like antibody identification or a specific blood group like Kell. In addition, I have posted a few shorter (ten minutes or less) video presentations that I call "podlets" on the site. These presentations are "10 minute tutorials" on various topics, including irradiation and leukocyte reduction.

Ask the Experts

In 2012, I asked one of the most knowledgeable blood bankers and immunohematologists I know, Monica LaSarre, to start taking your actual questions about immunohematology and develop the "Ask the Experts" portion of the site. Monica has moved on to other projects, but I have a great group of experts working with me to continue the work she began. You can read through the answers they have already published, as well as send them specific technical and general questions (please note that not all questions will be answered, though we try to get to as many as possible!).


The blood banking/transfusion medicine glossary covers over 200 definitions, terms, and concepts that are essential in blood banking. I will add more items to the list gradually, sometimes corresponding with the topics covered in the monthly podcast or blog entries. In many areas of the site, I have linked specific words, phrases, and concepts to their discussion in the glossary, and more of these will follow as I keep working on it.

STILL Free!!

I just have to point out that, as has been the case since the day I started this site over 15 years ago, you are STILL getting all of these things for the bargain price of ZERO DOLLARS! As you will see from my mission and vision for this site, I have a passion to teach people as much about blood banking and transfusion medicine as I possibly can. The comments and appreciation of visitors like you serve as awesome payment for the work that I put into it, so, please, if something I have done here has helped you, don't hesitate to let me know!

Facebook and Twitter Notifications

Social media alert: You can now follow/"like" this site on Facebook, Twitter, or YouTube and you'll be notified when new stuff is available. I promise not to clog your timelines with boring, silly stuff (as much as possible, anyway!). I also regularly interact with people through all three methods, so you can send me questions or comments for more immediate feedback.