LOINCActiveBoth

LOINC Code 1084-3: Js sup(a) Ag Ql (RBC)

1084-3 is a LOINC code used to identify Js sup(a) Ag Ql (RBC) 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 J little s super little a Ag. It is commonly used with the system or sample type RBC.

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 J little s super little a Ag. It is commonly used with the system or sample type RBC.

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

  • Js sup(a) Ag [Presence] on Red Blood Cells
  • J little s super little a Ag
  • Antigen; Antigens; BLOOD BANK; Erythrocytes; Hematology; Heme; J (little s) (little a); Js sup(a); Js^a; Kell Blood Group System; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Red blood cells; Red blood corpusles; s; S prime; Screen

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

Js sup(a) Ag Ql (RBC)Js sup(a) Ag [Presence] on Red Blood CellsJs sup(a) Ag RBC QlJ little s super little a AgBLDBKJs sup(a) antigen, Red blood cellsPrThr

Frequently asked questions

Code details

Code1084-3
SystemLOINC
Display nameJs sup(a) Ag Ql (RBC)
DescriptionJ little s super little a Ag
Short nameJs sup(a) Ag RBC Ql
ComponentJ little s super little a Ag
PropertyPrThr
TimingPt
System (specimen)RBC
ScaleOrd
ClassBLDBK
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.56

Consumer names

Js sup(a) antigen, Red blood cells

Part names

J little s super little a AgPrThrPtRBCOrdJs^a AgPresence or ThresholdPoint in time (spot)Red Blood Cells

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 1084-3 | HealthAssure