# CSF amyloid and tau

Source: https://onco.cc/technologies/da-tech-csf-biomarkers/  
OnCo record `da-tech-csf-biomarkers` (Technology). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

A spinal-fluid test can support an Alzheimer’s biology question in specialist clinics.

## Summary

CSF ratios are established in memory clinics that run lumbar puncture. They require skilled collection and agreed cut-offs.

## Fields

- Kind: Technology
- Last checked: 2026-09-21
- Tags: dementia-atlas
- Principle: Lumbar puncture measures amyloid-beta and tau species in cerebrospinal fluid.

## Sources

- NIA: https://www.nia.nih.gov/health/alzheimers-and-dementia

## Connected records

- diagnoses: [Alzheimer’s disease](https://onco.cc/diagnoses/alzheimers-disease/)
- fronts: [Fluid biomarkers](https://onco.cc/fronts/da-front-fluid-biomarkers/)

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