Obsessed with Helping You Learn Blood Banking

Let’s Be Honest…

Learning blood banking/transfusion medicine is scary! When you get started, you feel overwhelmed by facts, regulations, and intimidating words like “autoadsorption” and “elution.” It’s easy to get discouraged and feel like you are in WAY over your head.

Fear not! I’ve been right where you are, and with help, I found my way out. My name is Joe Chaffin, and I’m a Transfusion Medicine physician and teacher. For the past 25 years, I’ve helped guide tens of thousands of learners just like you over the intimidating mountain of details toward mastery of this field. I would love to help you, too!

Joe Teaching

It’s easy get lost in the jungle of BB/TM information!
I’m here to help you master the essentials.

Joe Chaffin, MD

Joe headshot

Is This Site For You?

I started BBGuy.org in 1998 as a way to teach pathology residents the basics. Today, anyone who wants to learn the essentials of blood banking and transfusion medicine can use this site. My teaching includes humor, occasional irreverence, and clear communication to highlight your path to understanding complex topics.

Blood Bank Guy?

Long ago, I would overhear attendees at my lectures say things like, “What time does the blood bank guy start lecturing?” or “Who is the blood bank guy again?” The clincher? While riding in a hotel elevator, I heard one lecture attendee who did not realize who I was ask a fellow attendee, “Why the heck are we going down to listen to the [CENSORED] blood bank guy?” After I stopped laughing, it just made sense to christen my new site “Blood Bank Guy.”

Credentials (if you care about that kind of thing!):

  • Board-certified Anatomic/Clinical Pathologist and specialist in Blood Banking/Transfusion Medicine
  • Transfusion Medicine lecturer, Osler Pathology Review Course, 1997-2016
  • Vice President/Chief Medical Officer, LifeStream Blood Bank, San Bernardino, CA, 2014-2021
  • Transfusion Medicine Educator, Loma Linda University Department of Pathology and Human Anatomy, 2018-present

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