LOINCActiveBoth

LOINC Code 59586-8: HLA IgG IF Ql (S)

59586-8 is a LOINC code used to identify HLA IgG IF 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 HLA Ab.IgG. 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 HLA Ab.IgG. 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: IF

What it does not mean

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

Key facts

  • HLA IgG Ab [Presence] in Serum by Immunofluorescence
  • HLA Ab.IgG
  • ABS; Aby; ACIF; Antby; Anti; Antibodies; Antibody; Anticomplement Immunofluorescence; Autoantibodies; Autoantibody; Cytotoxic-lymphocytic antibody; FA; Fluorescent antibody; Fluoresent; HLA ANTIGEN; Human Leukocyte Antigen; IFA; Immune fluorescence; Immune globulin G; Immunoflour; Immunofluor; Immunofluorescence; Immunoglobulin G; Lymphocyte antibody; Lymphocytotoxic antibody; Ordinal; Panel Reactive AB; Panel Reactive antibody; Point in time; PR; PRA; QL; Qual; Qualitative; Random; Screen; Serum; SR; Time Resolved Fluorescence; TRF

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

HLA IgG IF Ql (S)HLA IgG Ab [Presence] in Serum by ImmunofluorescenceHLA IgG Ser Ql IFHLA Ab.IgGHLAHLA IgG antibody, BloodPrThr

Frequently asked questions

Code details

Code59586-8
SystemLOINC
Display nameHLA IgG IF Ql (S)
DescriptionHLA Ab.IgG
Short nameHLA IgG Ser Ql IF
ComponentHLA Ab.IgG
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleOrd
MethodIF
ClassHLA
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.36
Last changed2.56

Consumer names

HLA IgG antibody, Blood

Part names

HLA Ab.IgGPrThrPtSerOrdIFHLA IgGPresence or ThresholdPoint in time (spot)SerumImmunofluorescence (IF)

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 59586-8 | HealthAssure