LOINCActiveBoth

LOINC Code 74334-4: MICA*017 IgG Ql (S)

74334-4 is a LOINC code used to identify MICA*017 IgG 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 MICA*017 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 MICA*017 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

What it does not mean

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

Key facts

MICA*017 IgG Ab [Presence] in Serum
MICA*017 Ab.IgG
IgG antibodies to MICA antigens, including MICA*017, can be detected in the serum of people during pregnancy, blood product transfusion, or unsuccessful organ transplants. MICA antibody testing identifies antibodies against a panel of MICA antigens using flow cytometry. MICA antibody testing using serum can be done pre and post transplantation. A positive result is an indication of sensitization to MICA antigens. This term is based on, but not exclusive to, the submitter's test kit, LIFECODES LSATM -MIC, a Luminex® screening assay for the qualitative detection of anti-MICA IgG antibodies.
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Immune globulin G; Immunoglobulin G; Major histocompatibility complex class I chain-related antigen A; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; 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

MICA*017 IgG Ql (S)MICA*017 IgG Ab [Presence] in SerumMICA*017 IgG Ser QlMICA*017 Ab.IgGSEROMICA*017 IgG antibody, BloodPrThr

Frequently asked questions

Code details

Code74334-4
SystemLOINC
Display nameMICA*017 IgG Ql (S)
DescriptionMICA*017 Ab.IgG
Short nameMICA*017 IgG Ser Ql
ComponentMICA*017 Ab.IgG
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleOrd
ClassSERO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.46
Last changed2.58

Consumer names

MICA*017 IgG antibody, Blood

Part names

MICA*017 Ab.IgGPrThrPtSerOrdMICA*017 IgGPresence or ThresholdPoint 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 74334-4 | HealthAssure