LOINCActiveBoth

LOINC Code 63361-0: TPO Ab IA Qn (Body fld)

63361-0 is a LOINC code used to identify TPO Ab IA Qn (Body fld) 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 Body fld.

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 Body fld.

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

  • Thyroperoxidase Ab [Units/volume] in Body fluid by Immunoassay
  • Thyroperoxidase Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; B/F; BF; bod; Bodies; Body fluid; Body fluid, unsp; EIA; ELFA; ELISA; Endocrine; Endocrinology; Enzyme immunoassay; Fl; Fld; FLU; Fluid; IAA; Iodide peroxidase; MEIA; Point in time; QNT; Quan; Quant; Quantitative; Random; Serology; SUDS; 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 IA Qn (Body fld)Thyroperoxidase Ab [Units/volume] in Body fluid by ImmunoassayThyroperoxidase Ab Fld IA-aCncThyroperoxidase AbSEROTPO antibody, Body fluidACnc

Frequently asked questions

Code details

Code63361-0
SystemLOINC
Display nameTPO Ab IA Qn (Body fld)
DescriptionThyroperoxidase Ab
Short nameThyroperoxidase Ab Fld IA-aCnc
ComponentThyroperoxidase Ab
PropertyACnc
TimingPt
System (specimen)Body fld
ScaleQn
MethodIA
ClassSERO
Example unitsIU/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.36
Last changed2.70

Consumer names

TPO antibody, Body fluid

Part names

Thyroperoxidase AbACncPtBody fldQnIAArbitrary ConcentrationPoint in time (spot)Body fluidImmunoassay

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.