| SNP Compositions | Allele1/Allele1 | Allele2/Allele2 | Allele1/Allele2 | No Call |
| A/C | AA | CC | AC or CA | NA |
| A/T | AA | TT | AT or TA | NA |
| A/G | AA | GG | AG or GA | NA |
| C/T | CC | TT | CT or TC | NA |
| C/G | CC | GG | CG or GC | NA |
| T/G | TT | GG | TG or GT | NA |
| CODE | 1 | 2 | 3 | 0 |