106939-2
LOINC Code
| LOINC code | 106939-2 | |
|---|---|---|
| name | ||
| description | The term repersents The PrecivityAD2™ test. This test is an analytically and clinically validated blood test designed to assist healthcare providers in diagnosing Alzheimer's disease (AD) in patients with mild cognitive impairment or dementia. It quantifies specific plasma amyloid beta and tau peptides using liquid chromatography-tandem mass spectrometry (LC-MS/MS) to calculate the Aβ42/40 and p-tau217/np-tau217 ratios. These ratios are combined in a proprietary algorithm to produce the Amyloid Probability Score 2 (APS2), a numerical value from 0-100 that indicates the likelihood of brain amyloid plaques. By providing a non-invasive alternative to PET scans, the PrecivityAD2™ test enhances diagnostic accuracy while mitigating the effects of confounding factors. | |
| status | ACTIVE | |
Fully-Specified Name | ||
| component | Amyloid plaques probability score | |
| property | Score | |
| time | Pt = Point in time: To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements. | |
| system | Plas = Plasma | |
| scale | Nom = Nominal: Nominal or categorical responses that do not have a natural ordering. (e.g., names of bacteria, reported as answers, categories of appearance that do not have a natural ordering, such as, yellow, clear, bloody. | |
| method | Calculation | |
Additional Names | ||
| short name | Alzheimer disease; Alzheimer's disease; Amyloid plaques score; APS; Calc; Calcn; Calculated; Nominal; Pl; Plasma; Plsm; Point in time; Random; Scale; Scre; Serology | |
Basic Attributes | ||
| class | SERO | |
| type | 1 Laboratory | |
| order vs. observation | Amyloid prob sc | |
| formula (readable) | The APS2 result is a composite score ranging from 0-100 that demonstrates the strongest correlation with brain amyloid pathology compared to the individual biomarkers (Aβ42/40 Ratio or p-tau217 Ratio) considered separately. | |
| example UCUM units | Score The Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures being contemporarily used in international science, engineering, and business (www.unitsofmeasure.org) | |
History/Usage | ||
| first released | ||
| last updated | 2.79 | |
| last change type | ADD - added | |
| change reason | {score} | |
Related Names | ||
| ||
Copyright © 2026 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2026, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.
Thank you for choosing Find-A-Code, please Sign In to remove ads.
Quick, Current, Complete - www.findacode.com