97503-7

Abnormal Prion Protein [Presence] in Cerebrospinal Fluid

Active

Term Description

Detection of pathologic prions in cerebrospinal fluid (CSF). The submitter's test uses recombinant prion protein (PrP) as a reagent substrate and patient CSF in a real-time quaking-induced conversion (RT-QuIC) assay. If pathologic prions are present in the patient's CSF, they propagate misfolding of the reagent PrP to form amyloid, which is detected using a fluorescent indicator. RT-QuIC has been adopted in clinical practice due to the sensitivity, specificity, and use of CSF (not a brain biopsy) for testing. The submitter's reported sensitivity of RT-QuIC in detecting CJD is >90%, and the specificity approaches 100%.

Part Description

LP35078-2   Prion protein.abnormal
Transmissible spongiform encephalopathies (TSEs), also known as prion diseases, are a group of progressive conditions (encephalopathies) that affect the brain and nervous system of many animals, including humans. According to the most widespread hypothesis they are transmitted by abnormal prions, though some other data suggest an involvement of a Spiroplasma infection. Mental and physical abilities deteriorate and a myriad of tiny holes appear in the cortex causing it to appear like a sponge (hence spongiform) when brain tissue obtained at autopsy is examined under a microscope. The disorders cause impairment of brain function, including memory changes, personality changes and problems with movement that worsen over time. Most TSEs are sporadic and occur in animals. Prion diseases of animals in include classical bovine spongiform encephalopathy (BSE) (C-type), atypical (H or L-type) BSE, Scrapie, atypical scrapie, Nor98, and chronic wasting disease (CWE). H-type and L-type BSE were named based on abnormal prion bands migrating to a higher (H) or lower (L) position on western blot analysis compared to the classical BSE (C-type) prion protein. Prion diseases of humans include classic Creutzfeldt-Jakob disease, new variant Creutzfeldt-Jakob disease (nvCJD, a human disorder related to Bovine spongiform encephalopathy), Gerstmann-Sträussler-Scheinker syndrome, fatal familial insomnia and kuru. These conditions form a spectrum of diseases with overlapping signs and symptoms. Copyright Text is available under the Creative Commons Attribution/Share-Alike License. See http://creativecommons.org/licenses/by-sa/3.0/ for details. Source: Wikipedia, Transmissible spongiform encephalopathy

LOINC Names Get Info

Fully-Specified Name

Prion protein.abnormal:PrThr:Pt:CSF:Ord:

Long Common Name

Abnormal Prion Protein [Presence] in Cerebrospinal Fluid

Short Name

Abn Prion Prot CSF Ql

Display Name

Abnormal Prion Protein Ql (CSF)

Consumer Name Alpha Get Info

Abnormal prion protein, Spinal fluid

Part Model Get Info

• Component

  Prion protein.abnormal
  LP35078-2

  • Analyte

    Prion protein.abnormal
    LP35078-2

    • Component Numerator

      Prion protein.abnormal
      LP35078-2

      • Component Numerator Core

        Prion protein.abnormal
        LP35078-2

      • Component Numerator Core Suffix

        NULL
         

    • Component Denominator

      NULL
       

      • Component Denominator Core

        NULL
         

      • Component Denominator Core Suffix

        NULL
         

  • Challenge

    NULL
     

  • Adjustment

    NULL
     

  • Count

    NULL
     

• Property

  PrThr
  LP217195-9

• Time

  Pt
  LP6960-1

  • Time Core

    Pt
    LP6960-1

  • Time Modifier

    NULL
     

• System

  CSF
  LP7156-5

  • System Core

    CSF
    LP7156-5

  • Super System

    NULL
     

• Scale

  Ord
  LP7751-3

• Method

  NULL
   

Example Answer List: LL2038-9

Basic Attributes

Class

MICRO

Type

Laboratory

First Released

Version 2.70

Last Updated

Version 2.83 (MIN)

Order vs. Observation

Both

Member of these Panels

Language Variants Get Info

Related Names

• abn
• Abn Prion Prot
• abnorm
• Bovine spongiform encephalopathy
• BSE
• Cerebral spinal fluid
• Cerebrospinal Fl
• ID
• Infectious Disease
• InfectiousDisease
• Microbiology
• Neuro
• Neurology
• Ordinal
• Point in time
• PR
• Prot
• PrP
• QL
• Qual
• Qualitative
• Random
• Scrapie
• Screen
• Spinal Fl
• Spinal Fld
• Spinal Flu
• Spinal Fluid

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CodeSystem lookup

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Copyright © Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 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.