LOINCOrder

LOINC Code 111275-4: TPO Ab [Measurement]

111275-4 is a LOINC code used to identify TPO Ab [Measurement] 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 Thyroperoxidase Ab. 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 Thyroperoxidase Ab. 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: TRIAL
  • Order vs observation: Order

What it does not mean

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

Key facts

Thyroperoxidase Ab [Measurement] in Serum or Plasma
Thyroperoxidase Ab
This term is intended to collate similar measurements for the LOINC SNOMED CT Collaboration in an ontological view. Additionally, it can be used to communicate a laboratory order, either alone or in combination with specimen or other information in the order. It may NOT be used to report back the measured patient value. [https//lo.inc/ce2mb6]
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Iodide peroxidase; Lab orders; Msmt; Pl; Plasma; Plsm; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Thyroid Microsomal; Thyroid microsomes; Thyroid peroxidase; TPO

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

TPO Ab [Measurement]Thyroperoxidase Ab [Measurement] in Serum or PlasmaThyroperoxidase Ab Msmt SerPlThyroperoxidase AbLABORDERS.ONTOLOGYTPO antibody, Blood{Measurement}

Frequently asked questions

Code details

Code111275-4
SystemLOINC
Display nameTPO Ab [Measurement]
DescriptionThyroperoxidase Ab
Short nameThyroperoxidase Ab Msmt SerPl
ComponentThyroperoxidase Ab
Property{Measurement}
Timing-
System (specimen)Ser/Plas
Scale-
ClassLABORDERS.ONTOLOGY
StatusTRIAL
Order/ObservationOrder

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.81
Last changed2.81

Consumer names

TPO antibody, Blood

Part names

Thyroperoxidase Ab{Measurement}-Ser/PlasMeasurementSerum or Plasma

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 111275-4 | HealthAssure