LOINCActiveBoth

LOINC Code 72314-8: Th-To IgG IA Ql

72314-8 is a LOINC code used to identify Th-To IgG IA Ql 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 Th-To 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 Th-To 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: IA

What it does not mean

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

Key facts

  • Th-To IgG Ab [Presence] in Serum or Plasma by Immunoassay
  • Th-To Ab.IgG
  • Th/To IgG class autoantibodies can be detected on immunoblot strips and visualized by enzyme-labeled reactions. Results may be interpreted by humans or automated methods and used for the diagnosis of system sclerosis (SSc, diffuse and limited forms) and overlapping syndromes. This code was created for, but not limited to, the detection of Th/To autoantibodies in Euroimmun's Systemic Sclerosis (Nucleoli) Profile EUROLINE (IgG) test kit.
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; EIA; ELFA; ELISA; Enzyme immunoassay; IAA; Immune globulin G; Immunoglobulin G; MEIA; Ordinal; Pl; Plasma; Plsm; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Serology; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; SUDS; Thallium

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

Th-To IgG IA QlTh-To IgG Ab [Presence] in Serum or Plasma by ImmunoassayTh-To IgG SerPl Ql IATh-To Ab.IgGSEROTh-To IgG antibody, BloodPrThr

Frequently asked questions

Code details

Code72314-8
SystemLOINC
Display nameTh-To IgG IA Ql
DescriptionTh-To Ab.IgG
Short nameTh-To IgG SerPl Ql IA
ComponentTh-To Ab.IgG
PropertyPrThr
TimingPt
System (specimen)Ser/Plas
ScaleOrd
MethodIA
ClassSERO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.42
Last changed2.56

Consumer names

Th-To IgG antibody, Blood

Part names

Th-To Ab.IgGPrThrPtSer/PlasOrdIATh-To IgGPresence or ThresholdPoint in time (spot)Serum or PlasmaImmunoassay

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.

LOINC Code 72314-8 | HealthAssure