A blood biomarker to support Alzheimer’s disease assessment
P-TAU 217 is a blood biomarker test measuring plasma phosphorylated tau 217. This information can help doctors review tau pathology clues associated with Alzheimer’s disease, particularly in people with memory or cognitive symptoms.
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How the report is presented
p-Tau217 results are usually shown against reference intervals to help doctors understand whether the result is within a normal, intermediate or higher range. The result alone cannot confirm or rule out Alzheimer’s disease and should be interpreted with symptoms, history, cognitive assessment and other investigations.
The sample type is blood. Report time is around 10 to 14 working days. The report image is for layout reference only; actual content depends on the individual test result.
Related information that may be reviewed
Where clinically appropriate, doctors may interpret p-Tau217 together with APOE genotype, Aβ42/40 ratio, imaging or other assessments for a more complete clinical picture.
How It Differs From COGENESIS® AD
| Item | COGENESIS® AD | P-TAU 217 |
|---|---|---|
| Testing focus | Assessment of inherited risk and early-onset Alzheimer’s disease related genetic clues. | A blood biomarker test that supports assessment of tau pathology associated with Alzheimer’s disease. |
| Key content | Covers six commonly related genes: APP, PSEN1, PSEN2, APOE, TREM2 and MAPT. APOE genotype can also be reviewed when appropriate. | Measures plasma phosphorylated tau 217 (p-Tau217). When clinically indicated, doctors may interpret it together with APOE or Aβ42/40 information. |
| Who may consider it | People under 65 with cognitive changes, a family history of early-onset Alzheimer’s disease, or concerns about inherited risk. | People with memory or cognitive symptoms who need supportive biomarker information for Alzheimer’s disease related pathology. |
| Sample type | Saliva or blood. | Blood. |
| Report time | Around 4 weeks. | Around 10 to 14 working days. |
| Interpretation | Results provide genetic risk information or possible clues; they are not a clinical diagnosis by themselves. | Results are usually presented against reference intervals and should be interpreted with symptoms, history, cognitive assessment, imaging or other tests. |
Medical Note
P-TAU 217 is a supportive assessment tool and is not a clinical diagnosis by itself. A doctor should review individual circumstances before and after testing and explain what the result means for follow-up care.
Enquire or Book
If you or your family have concerns about memory or cognitive symptoms, contact Well Clinic to enquire about P-TAU 217 blood testing.
Tel: +852 2633 5288
WhatsApp / WeChat: +852 5292 0089
Address: Unit B, 24/F, Lee Dong Building, 9 Li Yuen Street East, Central, Hong Kong