75633-8

LOINC Code


LOINC code75633-8
name
descriptionRheumatoid arthritis disease activity score is based on the measurements of 12 serum proteins. An algorithm is applied to these concentrations to calculate a quantitative disease activity score ranging from 1 to 100. Test results are intended to aid in the assessment of disease activity in RA patients when used in conjunction with a standard clinical assessment. The test is not intended or validated to diagnose RA. This term is based on Crescendo BioScience's Vectra DA blood test for rheumatoid arthritis disease activity.
statusACTIVE

Fully-Specified Name

componentRheumatoid arthritis disease activity score
propertyScore
timePt  =  Point in time:  To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements.
systemSer/Plas
    Ser  =  Serum
    Plas  =  Plasma
scaleSemiQn
methodCalculated.VectraDA

Additional Names

short nameActiv; Actvty; Arth; Calc; Calc VectraDA; Calculation; Chemistry; Dis; Diseases; Dz; MDAS; Movements; Multi-biomarker disease activity score; Pl; Plasma; Plsm; Point in time; RA; RA DAS; Random; Scale; Scre; SerP; SerPl; SerPlas; Serum; Serum or plasma; S

Basic Attributes

classCHEM
type1  Laboratory
order vs. observationRA DAS Score Ca
formula (readable)MBDA Score = round (max (min ((0.56 * sqrt (PTJC) + 0.28 * sqrt (PSJC) + 0.14 * PGH + 0.36 * log (CRP/10^6 + 1)) * 10.53 + 1, 100), 1))
example UCUM unitsscore
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)

Member of these Panels

75635-3

History/Usage

first released
last updated2.75
last change typeMAJ  - change to name field other than Component;
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.

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