LOINCActiveBoth

LOINC Code 63397-4: Myeloperoxidase Ab IA Ql (Body fld)

63397-4 is a LOINC code used to identify Myeloperoxidase Ab IA Ql (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 Myeloperoxidase 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 Myeloperoxidase 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

  • Myeloperoxidase Ab [Presence] in Body fluid by Immunoassay
  • Myeloperoxidase Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; B/F; BF; bod; Bodies; Body fluid; Body fluid, unsp; EIA; ELFA; ELISA; Enzyme immunoassay; Fl; Fld; FLU; Fluid; IAA; MEIA; MPO; MPO - ANCA; Myeloperoxidase ANCA; Ordinal; p-ANCA; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Serology; SUDS; Vasculitis

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

Myeloperoxidase Ab IA Ql (Body fld)Myeloperoxidase Ab [Presence] in Body fluid by ImmunoassayMyeloperoxidase Ab Fld Ql IAMyeloperoxidase AbSEROMyeloperoxidase antibody, Body fluidPrThr

Frequently asked questions

Code details

Code63397-4
SystemLOINC
Display nameMyeloperoxidase Ab IA Ql (Body fld)
DescriptionMyeloperoxidase Ab
Short nameMyeloperoxidase Ab Fld Ql IA
ComponentMyeloperoxidase Ab
PropertyPrThr
TimingPt
System (specimen)Body fld
ScaleOrd
MethodIA
ClassSERO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.36
Last changed2.56

Consumer names

Myeloperoxidase antibody, Body fluid

Part names

Myeloperoxidase AbPrThrPtBody fldOrdIAPresence or ThresholdPoint 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.