LOINCActiveObservation

LOINC Code 105528-4: Mj Ab Qn (S)

105528-4 is a LOINC code used to identify Mj Ab 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 MJ Ab. 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 MJ 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: Observation

What it does not mean

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

Key facts

  • Mj Ab [Units/volume] in Serum
  • MJ Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Dermatomyositis, Adult Type; Dermatomyositis, Childhood Type; JDM; MORC3; NXP-2; Point in time; QNT; Quan; Quant; Quantitative; Random; Serology; Serum; 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

Mj Ab Qn (S)Mj Ab [Units/volume] in SerumMj Ab Ser-aCncMJ AbSEROMj antibody, BloodACnc

Frequently asked questions

Code details

Code105528-4
SystemLOINC
Display nameMj Ab Qn (S)
DescriptionMJ Ab
Short nameMj Ab Ser-aCnc
ComponentMJ Ab
PropertyACnc
TimingPt
System (specimen)Ser
ScaleQn
ClassSERO
Example unitsU/mL
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.78
Last changed2.78

Consumer names

Mj antibody, Blood

Part names

Mj AbACncPtSerQnArbitrary 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.

LOINC Code 105528-4 | HealthAssure