LOINC Code 101806-8: Amyloid beta 42 peptide/Amyloid beta 40 peptide LC/MS/MS (P) [Ratio]

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Amyloid beta 42 peptide/Amyloid beta 40 peptide. It is commonly used with the system or sample type Plas.

When is it used?

• Used in lab systems, EHRs, and clinical data exchange.
• May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
• Status: DEPRECATED
• Order vs observation: Both
• Method: LC/MS/MS

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• Deprecated Amyloid beta 42 peptide/Amyloid beta 40 peptide [Ratio] in Plasma by LC/MS/MS
• Amyloid beta 42 peptide/Amyloid beta 40 peptide
• A Beta42/A Beta 40 Ser; Ab40 peptide; Ab42 peptide; Abeta; ABeta 40; Abeta 42; ABeta 42/40; AL beta40; AL beta42; Alzheimer disease; Alzheimer's disease; B; Beta-amyloid; Chemistry; Pept; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; Ratios; Rto

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Frequently asked questions