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LOINC Code 70072-4: Amyloid beta 40 peptide (CSF) [Mass/Vol]

70072-4 is a LOINC code used to identify Amyloid beta 40 peptide (CSF) [Mass/Vol] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Amyloid beta 40 peptide. It is commonly used with the system or sample type CSF.

Reviewed by HealthAssure Clinical TeamUpdated 25 May 2026

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 40 peptide. It is commonly used with the system or sample type CSF.

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: ACTIVE
  • Order vs observation: Both

What it does not mean

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

Key facts

  • Amyloid beta 40 peptide [Mass/volume] in Cerebral spinal fluid
  • Amyloid beta 40 peptide
  • Ab40 peptide; Abeta; Abeta 40; AL beta40; B; Beta-amyloid; Cerebral spinal fluid; Cerebrospinal Fl; Chemistry; Level; Mass concentration; Pept; Point in time; QNT; Quan; Quant; Quantitative; Random; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid

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

Amyloid beta 40 peptide (CSF) [Mass/Vol]Amyloid beta 40 peptide [Mass/volume] in Cerebral spinal fluidAL beta40 CSF-mCncAmyloid beta 40 peptideCHEMAmyloid beta 40 peptide, Spinal fluidMCnc

Frequently asked questions

Code details

Code70072-4
SystemLOINC
Display nameAmyloid beta 40 peptide (CSF) [Mass/Vol]
DescriptionAmyloid beta 40 peptide
Short nameAL beta40 CSF-mCnc
ComponentAmyloid beta 40 peptide
PropertyMCnc
TimingPt
System (specimen)CSF
ScaleQn
ClassCHEM
Example unitspg/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.40
Last changed2.73

Consumer names

Amyloid beta 40 peptide, Spinal fluid

Part names

Amyloid beta 40 peptideMCncPtCSFQnMass ConcentrationPoint in time (spot)Cerebral spinal fluid

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.