{
  "title": "Biological-age tests compared",
  "page": "https://stemcellatlas.com/en/compare/biological-age-tests-compared",
  "snapshot_date": "2026-08-30",
  "headers": [
    "Method",
    "Inputs",
    "What the model estimates"
  ],
  "rows": [
    [
      "Clinical Phenotypic Age",
      "Nine clinical biomarkers plus chronological age",
      "A mortality-risk-based age estimate, in years"
    ],
    [
      "DNAm PhenoAge",
      "DNA methylation at 513 sites",
      "A methylation estimate of Phenotypic Age"
    ],
    [
      "Original Horvath clock",
      "DNA methylation at 353 sites",
      "Age from a model trained on chronological age"
    ],
    [
      "DunedinPACE",
      "Blood DNA methylation at 173 sites",
      "Pace of aging, not age in years"
    ]
  ],
  "scope": "Editorially selected comparison, not an exhaustive review or clinical recommendation.",
  "sources": [
    "https://pmc.ncbi.nlm.nih.gov/articles/PMC4015143/",
    "https://pmc.ncbi.nlm.nih.gov/articles/PMC5940111/",
    "https://pmc.ncbi.nlm.nih.gov/articles/PMC8853656/"
  ],
  "registry_records": [],
  "rights": "Underlying source rights remain with their respective owners. No licence for the underlying papers or registry is granted by this export."
}