What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 98138-1: Amyloid plaques probability score based on clinical and lab data

Name: LOINC Code 98138-1: Amyloid plaques probability score based on clinical and lab data
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:31.428Z

98138-1 is a LOINC code used to identify Amyloid plaques probability score based on clinical and lab data 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 plaques probability score. It is commonly used with the system or sample type ^Patient.

Reviewed by HealthAssure Clinical TeamUpdated 21 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 plaques probability score. It is commonly used with the system or sample type ^Patient.

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: Observation
Method: Based on clinical+lab data

What it does not mean

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

Key facts

Amyloid plaques probability score based on clinical and lab data

Amyloid plaques probability score

The likelihood that a patient will have a positive amyloid PET scan based on lab and clinical data. The lab data may include results for Aβ42/40 ratio and ApoE status (phenotype or genotype). Clinical data may include age and other demographics. To report the algorithm used to determine the amyloid plaque probability score, use Risk calculation method used [LOINC94561-8].

Alzheimer disease; Alzheimer's disease; Amyloid plaques score; APS; CLIN.RISK; from clin+lab data; Neuro; Neurology; Point in time; QNT; Quan; Quant; Quantitative; Random; Scale; Scre

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 plaques probability score based on clinical and lab dataAmyloid plaques score from clin+lab dataAmyloid plaques probability scoreCLIN.RISKScorePt^Patient

Frequently asked questions

Code details

Code98138-1

SystemLOINC

Display nameAmyloid plaques probability score based on clinical and lab data

DescriptionAmyloid plaques probability score

Short nameAmyloid plaques score from clin+lab data

ComponentAmyloid plaques probability score

PropertyScore

TimingPt

System (specimen)^Patient

ScaleQn

MethodBased on clinical+lab data

ClassCLIN.RISK

Example unitsscore

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.71

Last changed2.72

Part names

Amyloid plaques probability scoreScorePt^PatientQnBased on clinical+lab dataPoint in time (spot)Based on clinical and lab data

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.