LOINCActiveBoth

LOINC Code 31023-5: Myelin associated glycoprotein IgM IB Ql (S)

31023-5 is a LOINC code used to identify Myelin associated glycoprotein IgM 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 Myelin associated glycoprotein Ab.IgM. 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 Myelin associated glycoprotein Ab.IgM. 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

  • Myelin associated glycoprotein IgM Ab [Presence] in Serum by Immunoblot
  • Myelin associated glycoprotein Ab.IgM
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Assoc; Autoantibodies; Autoantibody; Blt; gG; Glycoprot; Glycoproteins; GP; Immune blot; Immune globulin M; Immunobl; Immunoblot; Immunoglobulin M; MAG; MAGM; 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.

Common synonyms

Myelin associated glycoprotein IgM IB Ql (S)Myelin associated glycoprotein IgM Ab [Presence] in Serum by ImmunoblotMAG IgM Ser Ql IBMyelin associated glycoprotein Ab.IgMSEROMyelin associated glycoprotein IgM antibody, BloodPrThr

Frequently asked questions

Code details

Code31023-5
SystemLOINC
Display nameMyelin associated glycoprotein IgM IB Ql (S)
DescriptionMyelin associated glycoprotein Ab.IgM
Short nameMAG IgM Ser Ql IB
ComponentMyelin associated glycoprotein Ab.IgM
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleOrd
MethodIB
ClassSERO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.04
Last changed2.73

Consumer names

Myelin associated glycoprotein IgM antibody, Blood

Part names

Myelin associated glycoprotein Ab.IgMPrThrPtSerOrdIBMyelin Associated Glycoprotein IgMPresence 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.

LOINC Code 31023-5 | HealthAssure