ABO blood group predictions are brand new, and still under development. We're rolling it out to you so we can see how it performs on real data. All conclusions are still greatly limited by the general lack of phased data, the lack of genotyping at all of the necessary snps, and other factors.

ABO blood type O

rs8176719(D;D) rs8176746(C;C) rs8176747(G;G)

Are you really type O? Yes No Sorry, an error was occurred while submitting your feedback. Please try again later.

But the ABO system is quite limited

best guess:rs8176719 (D;D) indicates you are type-Oyou were not genotyped at either rs590787 nor i4001527 so it is impossible to see your Rh blood type

Blood, you see, doesn't just come in types A, B, AB, and O. The "positive" or "negative?" Nope. In fact, let's get all the way into the weeds: Scientists have since discovered over 300 proteins that contribute to blood type. The AB+ on your blood donor card? Yeah, that's a massive oversimplification... read more at Beyond Blood Type: Genomics Can Show What You're Really Made Of

or

It would be straightforward if we all had the same blood. But we don't. On the surface of every one of our red blood cells, we have up to 342 antigens - molecules capable of triggering the production of specialised proteins called antibodies. It is the presence or absence of particular antigens that determines someone's blood type.

Some 160 of the 342 blood group antigens are 'high-prevalence', which means that they are found on the red blood cells of most people. If you lack an antigen that 99 per cent of people in the world are positive for, then your blood is considered rare. If you lack one that 99.99 per cent of people are positive for, then you have very rare blood.

If a particular high-prevalence antigen is missing from your red blood cells, then you are 'negative' for that blood group. If you receive blood from a 'positive' donor, then your own antibodies may react with the incompatible donor blood cells, triggering a further response from the immune system. These transfusion reactions can be lethal. Read more at The man with the golden blood.

Known ABO SNPs

23andMe ABO Index Gene SNP Geno Repute Magnitude Summary 1 rs7466519 not tested 2 rs8176750 (I;I) 3 rs56202119 not tested 4 i4000505 (G;G) Good 0 5 rs56231718 not tested 6 rs55788852 not tested 7 rs55927860 not tested 8 rs8176749 (G;G) 0 9 rs56190619 not tested 10 rs55783488 not tested 11 rs56355240 not tested 12 i4000504 (C;C) 0 13 rs56409303 not tested 14 rs55805279 not tested 15 rs56106480 not tested 16 rs8176747 (G;G) Good 0 common in clinvar 17 rs41302905 (C;C) Good 0 common in complete genomics 18 rs8176746 (C;C) 0 19 rs8176745 not tested 20 rs55951833 not tested 21 rs8176743 (G;G) 0 22 i5007173 not tested 23 rs55739900 not tested 24 rs56116432 not tested 25 rs56031507 not tested 26 rs8176741 (C;C) 27 rs56408700 not tested 28 rs8176740 (A;T) 29 rs55827808 not tested 30 rs8176739 not tested 31 rs56223957 not tested 32 rs56189011 not tested 33 rs56089890 not tested 34 rs55727303 not tested 35 rs7853989 (G;G) Not blood group B 36 rs55964869 (C;C) Good 0 common in complete genomics 37 rs55756402 not tested 38 i5007171 not tested 39 rs1053878 (C;C) Good 0 common in complete genomics 40 rs55658842 not tested 41 rs7873522 not tested 42 rs8176732 not tested 43 rs2073824 (A;G) 44 rs8176722 (G;G) 45 rs8176721 not tested 46 rs8176720 (A;G) 47 rs8176719 (D;D) likely to be of blood type O 48 rs56231711 not tested 49 rs8176717 not tested 50 rs512770 (A;G) 51 rs641959 not tested 52 rs514708 not tested 53 rs55958637 not tested 54 rs549446 not tested 55 rs8176704 (C;C) 56 rs574347 (C;T) 57 rs688976 not tested 58 rs687289 (C;C) 59 rs2073828 (A;G) 60 rs55876802 not tested 61 rs8176694 (A;A) 62 rs672316 not tested 63 rs657152 (G;G) Good 0 common/normal 64 rs8176682 not tested 65 rs474279 not tested 66 rs500498 (T;T) 67 rs505922 (T;T) Good 2 blood type O 68 rs507666 (G;G) 69 rs630014 (C;T)