Commercial testing companies follow different standards when determining marker values. The SMGF
Search Page automatically converts marker values when you
select a lab. However, we provide the following chart for comparisons between testing companies
and the ISFG standard.
| Marker | ISFG | Ancestry.com | DNA-Fingerprint | DNA Heritage | Family Tree DNA | Genebase | Genographic | Oxford Ancestors | Relative Genetics | Unknown/Other |
|---|
| DYS385 | = | = | = | = | = | = | = | ? | = | = | | DYS388 | = | = | = | = | = | = | = | = | = | = | | DYS389II | ** | ** | ** | ** | ** | ** | ** | ** | ** | ** | | DYS389I | = | = | = | = | = | = | = | + 3 | = | = | | DYS390 | = | = | = | = | = | = | = | = | = | = | | DYS391 | = | = | = | = | = | = | = | = | = | = | | DYS392 | = | = | = | = | = | = | = | = | = | = | | DYS393 | = | = | = | = | = | = | = | = | = | = | | DYS394/19 | = | = | = | = | = | = | = | = | = | - 1 | | DYS426 | = | = | = | = | = | = | = | = | = | = | | DYS437 | = | = | = | = | = | = | ? | ? | = | = | | DYS438 | = | = | = | = | = | = | ? | ? | = | = | | DYS439 | = | = | = | = | = | = | = | ? | = | = | | DYS441 | = | = | + 1 | = | + 1 | + 2 | ? | ? | + 1 | + 1 | | DYS442 | = | = | + 5 | = | + 5 | + 5 | ? | ? | + 5 | + 5 | | DYS444 | = | = | = | = | = | ? | ? | ? | = | = | | DYS445 | = | = | = | = | = | = | ? | ? | = | = | | DYS446 | = | = | = | = | = | = | ? | ? | = | = | | DYS447 | = | = | = | = | = | ? | ? | ? | = | = | | DYS448 | = | = | = | = | = | = | ? | ? | = | - 3 | | DYS449 | = | = | = | = | = | = | ? | ? | = | = | | DYS452 | = | = | = | = | = | = | ? | ? | + 19 | = | | DYS454 | = | = | = | = | = | + 1 | ? | ? | = | = | | DYS455 | = | = | = | = | = | = | ? | ? | = | = | | DYS456 | = | = | = | = | = | = | ? | ? | = | = | | DYS458 | = | = | = | = | = | + 2 | ? | ? | = | = | | DYS459 | = | = | = | = | = | = | ? | ? | = | = | | DYS460 | = | = | = | = | = | ? | ? | ? | = | = | | DYS461 | = | = | = | = | = | = | ? | ? | = | + 1 | | DYS462 | = | = | = | = | = | = | ? | ? | = | = | | DYS463 | = | = | = | = | = | ? | ? | ? | + 2 | = | | DYS464 | = | = | = | = | = | = | ? | ? | = | = | | GGAAT1B07 | = | = | = | = | = | ? | ? | ? | = | = | | YCAII | = | = | = | = | = | = | ? | ? | = | = | | YGATAA10 | = | = | + 2 | = | + 2 | = | ? | ? | + 2 | + 2 | | YGATAC4 | = | = | = | = | = | = | ? | ? | = | = | | GATA H4.1 | = | - 1 | + 9 | - 1 | + 10 | + 9 | ? | ? | + 9 | + 9 |
Example: If your Genebase DNA test results show DYS458=15, then you would add two to get the ISFG equivalent (DYS458=17).
| ** | Please see the DYS389 page for more details about this marker. | | ? | Conversion is unknown. | | = | No conversion necessary. |
Note: Differences in standards are due to different methods of counting STR values.
ISFG Standard: Gusmao, L., J.M. Butler, A. Carracedo, P. Gill, M. Kayser, W.R. Mayr, N. Morling, M. Prinz, L. Roewer, C. Tyler-Smith, P.M. Schneider. 2006. DNA Commission of the International Society of Forensic Genetics (ISFG): An update of the recommendations on the use of Y-STRs in forensic analysis. Forensic Sci. Int. 157:187–197.
| 
