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 56733-9: PCNA extractable nuclear Ab IB Ql (S)

Name: LOINC Code 56733-9: PCNA extractable nuclear Ab IB Ql (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

56733-9 is a LOINC code used to identify PCNA extractable nuclear Ab IB Ql (S) 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 PCNA extractable nuclear Ab. It is commonly used with the system or sample type Ser.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 PCNA extractable nuclear Ab. It is commonly used with the system or sample type Ser.

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: IB

What it does not mean

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

Key facts

PCNA extractable nuclear Ab [Presence] in Serum by Immunoblot
PCNA extractable nuclear Ab
ABS; Aby; ANA; ANF; Antby; Anti; Antibodies; Antibody; Antinuclear antibody; Autoantibodies; Autoantibody; Blt; ENA; ENA PCNA; IMMUNE BLOT; Immunobl; Immunoblot; NA; Nuc; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; RIBA; Screen; Serology; Serum; SR; WB; WBLOT; West blot; West blt; Western blot

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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for PCNA extractable nuclear Ab IB Ql (S) (56733-9)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

PCNA extractable nuclear Ab IB Ql (S)PCNA extractable nuclear Ab [Presence] in Serum by ImmunoblotENA PCNA Ab Ser Ql IBPCNA extractable nuclear AbSEROPCNA extractable nuclear antibody, BloodPrThr

Frequently asked questions

Code details

Code56733-9

SystemLOINC

Display namePCNA extractable nuclear Ab IB Ql (S)

DescriptionPCNA extractable nuclear Ab

Short nameENA PCNA Ab Ser Ql IB

ComponentPCNA extractable nuclear Ab

PropertyPrThr

TimingPt

System (specimen)Ser

ScaleOrd

MethodIB

ClassSERO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.29

Last changed2.58

Consumer names

PCNA extractable nuclear antibody, Blood

Part names

PCNA extractable nuclear AbPrThrPtSerOrdIBPresence or ThresholdPoint in time (spot)SerumImmunoblot

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.