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.

LOINCActiveBoth

LOINC Code 105523-5: Phosphodiesterase 10A IgG IF [Titer]

Name: LOINC Code 105523-5: Phosphodiesterase 10A IgG IF [Titer]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:19.135Z

105523-5 is a LOINC code used to identify Phosphodiesterase 10A IgG IF [Titer] 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 Phosphodiesterase 10A Ab.IgG. It is commonly used with the system or sample type Ser/Plas.

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 Phosphodiesterase 10A Ab.IgG. It is commonly used with the system or sample type Ser/Plas.

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
Method: IF

What it does not mean

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

Key facts

Phosphodiesterase 10A IgG Ab [Titer] in Serum or Plasma by Immunofluorescence
Phosphodiesterase 10A Ab.IgG
ABS; Aby; ACIF; Antby; Anti; Antibodies; Antibody; Anticomplement Immunofluorescence; Autoantibodies; Autoantibody; Chemistry; Dilution factor; Dilution Factor (Titer); FA; Fluorescent antibody; Fluoresent; IFA; Immune fluorescence; Immune globulin G; Immunoflour; Immunofluor; Immunofluorescence; Immunoglobulin G; PDE10A; Pl; Plasma; Plsm; Point in time; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SmQn; SR; Time Resolved Fluorescence; Titer; Titered; Titre; TRF; Ttr

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

Phosphodiesterase 10A IgG IF [Titer]Phosphodiesterase 10A IgG Ab [Titer] in Serum or Plasma by ImmunofluorescencePDE10A IgG Titr SerPl IFPhosphodiesterase 10A Ab.IgGCHEMPhosphodiesterase 10A IgG antibody, BloodTitr

Frequently asked questions

Code details

Code105523-5

SystemLOINC

Display namePhosphodiesterase 10A IgG IF [Titer]

DescriptionPhosphodiesterase 10A Ab.IgG

Short namePDE10A IgG Titr SerPl IF

ComponentPhosphodiesterase 10A Ab.IgG

PropertyTitr

TimingPt

System (specimen)Ser/Plas

ScaleSemiQn

MethodIF

ClassCHEM

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.78

Last changed2.78

Consumer names

Phosphodiesterase 10A IgG antibody, Blood

Part names

Phosphodiesterase 10A Ab.IgGTitrPtSer/PlasSemiQnIFTiterPoint in time (spot)Serum or PlasmaImmunofluorescence (IF)

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.