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A/T/N biomarker grouping.
| A | T | N |
|---|---|---|
| Aggregated Aβ or associated pathological state | Aggregated tau (neurofibrillary tangles) or associated pathological state | Neurodegeneration or neural injury |
| CSF Aβ42, or Aβ42/Aβ40 ratio | CSF phosphorylated tau | Anatomical MRI |
| Amyloid PET | Tau PET | FDG-PET, CSF total tau |
