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The determination of the ratio of phosphorylated Tau 217 to amyloid beta 1-42 present in a sample. The measurement may be expressed as a ratio or percentage.

For professionals

Article

Quantitative enrichment of amyloid precursors refines mass spectrometry-based amyloidosis diagnosis.

Research record from Clin Proteomics, 2026-03-17. PMID 41845213.

Indicators

A family of apolipoproteins that are associated with high-density lipoprotein particles in the serum. These proteins may play a role in both the acute-phase of inflammation and in cholesterol transport.

Tests

Total Amyloid Precursor Protein Measurement

The determination of the amount of the total amyloid precursor protein in a biological specimen.

For professionals

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Amyloid Beta 1-41 Measurement

Amyloid Alpha Precursor Protein Measurement

Amyloid P Measurement

Beta Amyloid 42 Measurement

Comparison of a multi-analyte algorithmic immunoassay blood test with immunoprecipitation mass spectrometry for the detection of amyloid pathology.

Dual-color ultrabright AIEgens nanoparticles-based lateral flow immunoassay for simultaneous quantitative detection of serum amyloid A protein and C-reactive protein.

Elecsys pT181p immunoassay: Clinical performance for ruling out amyloid pathology.

Performance of a fully automated plasma tau phosphorylated at threonine 217 immunoassay to reflect amyloid-beta burden in an unselected cohort representative of clinical practice.

Phosphorylated Tau 217 to Amyloid Beta 1-42 Ratio Measurement

Quantitative enrichment of amyloid precursors refines mass spectrometry-based amyloidosis diagnosis.

Serum Amyloid A

Total Amyloid Precursor Protein Measurement