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.

LOINCObservation

LOINC Code 33018-3: Protein.monoclonal Elph Qn

Name: LOINC Code 33018-3: Protein.monoclonal Elph Qn
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

33018-3 is a LOINC code used to identify Protein.monoclonal Elph Qn 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 Protein.monoclonal. It is commonly used with the system or sample type Ser/Plas.

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 Protein.monoclonal. It is commonly used with the system or sample type Ser/Plas.

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: DISCOURAGED
Order vs observation: Observation
Method: Electrophoresis

What it does not mean

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

Key facts

Protein.monoclonal [Units/volume] in Serum or Plasma by Electrophoresis
Protein.monoclonal
Arbitrary concentration; Chemistry; Elec; Elect; Electr; Electro; Electrophhrs; Electrophrs; Elp; Elph; Ep; M Protein; M-band; Monoclonal band; Monoclonal spike; M-protein; M-spike; Para protein; Paraprotein; Pl; Plasma; Plsm; Point in time; PR; Prot; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SPEP; SR

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 Protein.monoclonal Elph Qn (33018-3)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Protein.monoclonal Elph QnProtein.monoclonal [Units/volume] in Serum or Plasma by ElectrophoresisM Protein SerPl Elph-aCncProtein.monoclonalCHEMProtein.monoclonal, BloodACnc

Frequently asked questions

Code details

Code33018-3

SystemLOINC

Display nameProtein.monoclonal Elph Qn

DescriptionProtein.monoclonal

Short nameM Protein SerPl Elph-aCnc

ComponentProtein.monoclonal

PropertyACnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

MethodElectrophoresis

ClassCHEM

StatusDISCOURAGED

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.09

Last changed2.69

Consumer names

Protein.monoclonal, Blood

Part names

Protein.monoclonalACncPtSer/PlasQnElectrophoresisArbitrary ConcentrationPoint in time (spot)Serum or Plasma

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.