Phosphorylated Tau (p-tau181) in Alzheimer's Disease and Other Dementias

In Alzheimer's Disease and Other Dementias, published studies report higher levels of Phosphorylated Tau (p-tau181) than in the reference group of the cited comparison (AD vs healthy/non-AD (core CSF/plasma biomarker)). The source does not tie this marker to a specific symptom cluster, so it is best read as a biological signal rather than a symptom predictor. The evidence summarised here comes from Abukuri et al. 2024 and reflects averages across cohorts rather than any single patient's result.

↑ ElevatedNeurological

Summary

Direction in Alzheimer's Disease and Other Dementias↑ Elevated — higher than in the comparison group
CategoryNeurological
Compared againstAD vs healthy/non-AD (core CSF/plasma biomarker)
SourceAbukuri et al. 2024 — doi:10.1155/2024/6668159
Condition atlasAlzheimer's Disease and Other Dementias Biomarker Atlas

Related Neurological markers in Alzheimer's Disease and Other Dementias

Full list: Alzheimer's Disease and Other Dementias Biomarker Atlas.

Frequently asked questions

Is Phosphorylated Tau (p-tau181) high or low in Alzheimer's Disease and Other Dementias?

Elevated. Studies summarised in the OSMF atlas report higher Phosphorylated Tau (p-tau181) in Alzheimer's Disease and Other Dementias than in the reference group of the cited comparison (AD vs healthy/non-AD (core CSF/plasma biomarker)). Source: Abukuri et al. 2024.

Which test measures Phosphorylated Tau (p-tau181)?

The atlas record does not list a standardised clinical test code (LOINC) for Phosphorylated Tau (p-tau181), which usually means it was measured with research assays or study-specific protocols rather than a routine clinical panel. Check the cited source for the exact method.

Is one abnormal Phosphorylated Tau (p-tau181) result diagnostic of Alzheimer's Disease and Other Dementias?

No. No single biomarker is diagnostic of Alzheimer's Disease and Other Dementias. Phosphorylated Tau (p-tau181) findings come from group comparisons, overlap considerably between patients and controls, and vary with study design, timing and comparison group. A result should be interpreted by a clinician alongside symptoms, history and other tests.

Cite this page

Open Source Medicine Foundation. (2026). Phosphorylated Tau (p-tau181) in Alzheimer's Disease and Other Dementias: direction, evidence and what it means. OSMF Research Tracker. Retrieved October 7, 2026, from https://research.opensourcemed.info/biomarkers/alzheimer-s-disease-and-other-dementias/phosphorylated-tau-p-tau181.html
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Last reviewed: 2026-07-03 · Page generated from alzheimer-s-disease-and-other-dementias.json · Browse: Alzheimer's Disease and Other Dementias atlas · Biomarker Index · All marker pages

Disclaimer: This page is an educational synthesis of published, peer-reviewed research and is not medical advice. Biomarker findings vary across studies with case definitions, comparison groups, timing and assay methods. Direction of change reflects the predominant finding in the cited source and does not establish a diagnostic threshold. Discuss any test result with a qualified clinician.