LOINCActiveBoth

LOINC Code 50951-3: Phosphoserine IgA Ql

50951-3 is a LOINC code used to identify Phosphoserine IgA Ql 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 Phosphoserine Ab.IgA. 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 Phosphoserine Ab.IgA. 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: Both

What it does not mean

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

Key facts

  • Phosphoserine IgA Ab [Presence] in Serum or Plasma
  • Phosphoserine Ab.IgA
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; aPS; Autoantibodies; Autoantibody; COAGULATION; Hematology; Heme; Immune globulin A; Immunoglobulin A; Ordinal; Pl; Plasma; Plsm; Point in time; PR; PS; QL; Qual; Qualitative; Random; Screen; SerP; SerPl; SerPlas; Serum; Serum or plasma; 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

Phosphoserine IgA QlPhosphoserine IgA Ab [Presence] in Serum or PlasmaPhosphoserine IgA SerPl QlPhosphoserine Ab.IgACOAGPhosphoserine IgA antibody, BloodPrThr

Frequently asked questions

Code details

Code50951-3
SystemLOINC
Display namePhosphoserine IgA Ql
DescriptionPhosphoserine Ab.IgA
Short namePhosphoserine IgA SerPl Ql
ComponentPhosphoserine Ab.IgA
PropertyPrThr
TimingPt
System (specimen)Ser/Plas
ScaleOrd
ClassCOAG
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.22
Last changed2.56

Consumer names

Phosphoserine IgA antibody, Blood

Part names

Phosphoserine Ab.IgAPrThrPtSer/PlasOrdPhosphoserine IgAPresence or ThresholdPoint 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.

LOINC Code 50951-3 | HealthAssure