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 68549-5: U2 small nuclear ribonucleoprotein Ab Ql (S)

Name: LOINC Code 68549-5: U2 small nuclear ribonucleoprotein Ab Ql (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

68549-5 is a LOINC code used to identify U2 small nuclear ribonucleoprotein Ab 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 U2 small nuclear ribonucleoprotein 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 U2 small nuclear ribonucleoprotein 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

What it does not mean

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

Key facts

U2 small nuclear ribonucleoprotein Ab [Presence] in Serum
U2 small nuclear ribonucleoprotein Ab
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Nuc; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Ribonuclear protein; RNP; Screen; Serology; Serum; snRNP; SR; U2 RNP; U2 snRNP; U2RNP

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 U2 small nuclear ribonucleoprotein Ab Ql (S) (68549-5)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

U2 small nuclear ribonucleoprotein Ab Ql (S)U2 small nuclear ribonucleoprotein Ab [Presence] in SerumU2 snRNP Ab Ser QlU2 small nuclear ribonucleoprotein AbSEROU2 small nuclear ribonucleoprotein antibody, BloodPrThr

Frequently asked questions

Code details

Code68549-5

SystemLOINC

Display nameU2 small nuclear ribonucleoprotein Ab Ql (S)

DescriptionU2 small nuclear ribonucleoprotein Ab

Short nameU2 snRNP Ab Ser Ql

ComponentU2 small nuclear ribonucleoprotein Ab

PropertyPrThr

TimingPt

System (specimen)Ser

ScaleOrd

ClassSERO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.38

Last changed2.73

Consumer names

U2 small nuclear ribonucleoprotein antibody, Blood

Part names

U2 small nuclear ribonucleoprotein AbPrThrPtSerOrdPresence or ThresholdPoint in time (spot)Serum

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.