All 23 Blood Types & Transfusion Compatibility flashcards. Free.
The whole deck, not a sample — Blood Types & Transfusion Compatibility is 23 cards, which is no longer than the 30 we give away on every deck, so there is nothing left to charge for. 11 pages, US Letter, black and white. Grades 9–12.
No account, no email, no card details.
11 pages, and the backs are already right
Every front sheet is followed by its own back sheet with the rows reversed. Print double-sided, flip on the long edge, and answer number 7 is behind question number 7. Print a deck you built yourself, flip on the short edge, and every answer lands on the wrong card — which nobody finds out until sixty cards have been cut apart.
- 23 cards — counted out of the file, not rounded up
- Eight cards a sheet, with cut guides
- US Letter PDF, black and white, photocopier-friendly
- Print a set per student, every class, every year
23 cards. ABO crossed with Rh is a closed set: four groups, two Rh states, and the compatibility rules that fall out of them. Padding it would mean inventing distinctions the system does not have.
Every card here is cited to two independent sources
Two different organisations — not a standards body and a website reprinting it — and a script refuses the card if the two disagree, so the check runs on every card rather than on the ones somebody remembered to look at. A second specialist then re-verified this deck from sources of their own, without reading our citations first. A further 5,420 cards across 30 other decks were read end to end by a subject specialist instead, and we say which is which on every deck rather than averaging the two into one flattering word.
What 23 printed cards do that a screen does not
A phone deck is one card at a time. A printed deck is a pile you can split: the ones you know, the ones you nearly know, and the ones you keep missing. That third pile is the entire study session, and it is the thing a scrolling app hides from you.
- Print once, use all year. The licence covers a set per student, every class, every year.
- No device, no login, no data. Works in a cover lesson, on a bus, or at a kitchen table. Grades 9–12, filed under science.
- Change what you disagree with. Every card loads into the free maker on this site. Reword it, drop it, add your own, reprint.
Here are all 23 cards
Check them against your own textbook before you spend anything.
- What an ABO blood type describes
- Which of the A and B antigens sit on the red cell surface — one, the other, both, or neither
- Group A
- A antigen on the red cells; anti-B antibody in the plasma
- Group B
- B antigen on the red cells; anti-A antibody in the plasma
- Group AB
- Both A and B antigens; neither anti-A nor anti-B in the plasma
- Group O
- No A or B antigen; both anti-A and anti-B in the plasma
- What Rh positive and Rh negative mean
- The RhD antigen is present (positive) or absent (negative) on the red cells
- Universal red cell donor
- O negative — those red cells carry no A, B or D antigen for a recipient's antibodies to hit
- Universal red cell recipient
- AB positive — that plasma holds no anti-A, no anti-B and no anti-D
- Universal plasma donor
- Group AB — its plasma carries neither anti-A nor anti-B, so it suits any ABO group
- Why the plasma rule is the mirror of the red cell rule
- Plasma carries the antibodies, not the antigens — it must be ABO compatible with the patient's red cells
- Red cells a group O patient can receive
- Group O only
- Red cells a group A patient can receive
- Group A or group O
- Red cells a group B patient can receive
- Group B or group O
- Red cells a group AB patient can receive
- Any ABO group — A, B, AB or O
- Plasma a group O patient can receive
- Any ABO group — O, A, B or AB; group O red cells carry no antigen for those antibodies to hit
- Plasma a group A patient can receive
- Group A or group AB
- Plasma a group B patient can receive
- Group B or group AB
- Plasma a group AB patient can receive
- Group AB only — anti-A or anti-B in donor plasma would meet both antigens
- Rh rule for red cells
- Rh-negative patients get Rh-negative red cells; Rh-positive patients can take either
- Does plasma have to match on Rh?
- No — Rh(D) compatibility is not needed for plasma; AB plasma suits anyone, positive or negative
- Which antibodies form without any exposure?
- Anti-A and anti-B, from infancy; anti-D forms only after exposure in transfusion or pregnancy
- What ABO and Rh leave out
- Many more blood group systems (Kell, Duffy, Kidd and others), each with antigens of its own
- What a real transfusion takes, beyond knowing the type
- ABO/Rh typing, an antibody screen and a crossmatch — except in an emergency, when uncrossmatched O is given first
Questions
- How do I print them double-sided?
- Double-sided, flip on the long edge. Every front sheet is followed by its own already-mirrored back sheet, so print them in the order they come and every answer lands on its own card.
- Can I edit the cards?
- Yes, and that is half the point. Once you own the deck, the "Buy & edit" button here opens all 23 cards in the free flash card maker on this site — reword a definition, delete the ones you do not teach, add your own, and print at anything from two to nine cards a page, rather than the fixed eight of the PDF.
- Can I print a set for every student?
- Yes. Personal and classroom licence: unlimited printing, every class you teach, every year you teach it. It does not cover reselling the file or passing it on to a colleague.
- What if I find a card that is wrong?
- Tell us and we fix it, and we publish what changed. We have withdrawn a whole deck from sale for being out of date rather than quietly patch it.
- Do I need an account?
- No. The file downloads straight away — no account, no email, no card details.