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 33983-8: U1 small nuclear ribonucleoprotein IgG Qn (S)

Name: LOINC Code 33983-8: U1 small nuclear ribonucleoprotein IgG Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:21.186Z

33983-8 is a LOINC code used to identify U1 small nuclear ribonucleoprotein IgG Qn (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 U1 small nuclear ribonucleoprotein Ab.IgG. It is commonly used with the system or sample type Ser.

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 U1 small nuclear ribonucleoprotein Ab.IgG. 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

U1 small nuclear ribonucleoprotein IgG Ab [Units/volume] in Serum
U1 small nuclear ribonucleoprotein Ab.IgG
ABS; Aby; ANA IgG; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Immune globulin G; Immunoglobulin G; Nuc; Point in time; QNT; Quan; Quant; Quantitative; Random; Ribonuclear protein; RNP; Serology; Serum; snRNP; SR; U1 RNP; U1 snRNP; U1RNP

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

U1 small nuclear ribonucleoprotein IgG Qn (S)U1 small nuclear ribonucleoprotein IgG Ab [Units/volume] in SerumU1 snRNP IgG Ser-aCncU1 small nuclear ribonucleoprotein Ab.IgGSEROU1 small nuclear ribonucleoprotein IgG antibody, BloodACnc

Frequently asked questions

Code details

Code33983-8

SystemLOINC

Display nameU1 small nuclear ribonucleoprotein IgG Qn (S)

DescriptionU1 small nuclear ribonucleoprotein Ab.IgG

Short nameU1 snRNP IgG Ser-aCnc

ComponentU1 small nuclear ribonucleoprotein Ab.IgG

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

ClassSERO

Example unitsarb U/mL

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.09

Last changed2.73

Consumer names

U1 small nuclear ribonucleoprotein IgG antibody, Blood

Part names

U1 small nuclear ribonucleoprotein Ab.IgGACncPtSerQnU1 Small Nuclear Ribonucleoprotein IgGArbitrary ConcentrationPoint 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.