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.

LOINCActiveObservation

LOINC Code 50797-0: Protein.monoclonal band 4 Elph [Mass/Vol]

Name: LOINC Code 50797-0: Protein.monoclonal band 4 Elph [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:34.497Z

50797-0 is a LOINC code used to identify Protein.monoclonal band 4 Elph [Mass/Vol] 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 band 4. It is commonly used with the system or sample type Ser/Plas.

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 Protein.monoclonal band 4. 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: ACTIVE
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 band 4 [Mass/volume] in Serum or Plasma by Electrophoresis
Protein.monoclonal band 4
Bands; bnd; Chemistry; Elec; Elect; Electr; Electro; Electrophhrs; Electrophrs; Elp; Elph; Ep; Level; M Protein; M Protein 4; Mass Concentration; 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.

Common synonyms

Protein.monoclonal band 4 Elph [Mass/Vol]Protein.monoclonal band 4 [Mass/volume] in Serum or Plasma by ElectrophoresisM Protein 4 SerPl Elph-mCncProtein.monoclonal band 4CHEMProtein.monoclonal band 4, BloodMCnc

Frequently asked questions

Code details

Code50797-0

SystemLOINC

Display nameProtein.monoclonal band 4 Elph [Mass/Vol]

DescriptionProtein.monoclonal band 4

Short nameM Protein 4 SerPl Elph-mCnc

ComponentProtein.monoclonal band 4

PropertyMCnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

MethodElectrophoresis

ClassCHEM

Example unitsg/L

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.22

Last changed2.73

Consumer names

Protein.monoclonal band 4, Blood

Part names

Protein.monoclonal band 4MCncPtSer/PlasQnElectrophoresisMass 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.