A side-by-side comparison of the two methods' recorded facts. Any correction to either method's underlying record is reflected here.
| PhenoAge (Levine Phenotypic Age) | GrimAge | |
|---|---|---|
| Method type | blood-based | epigenetic |
| Published | 2018 | 2019 |
| Sample type | blood (serum/plasma, routine CBC + chemistry panel) | blood (DNA methylation, Illumina array) |
| Open or commercial | open | both |
| Formula publicly available | Yes | No |