LOINCActiveBoth

LOINC Code 55141-6: Fc epsilon RI + RII Ab Qn (S)

55141-6 is a LOINC code used to identify Fc epsilon RI + RII 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 Fc epsilon RI + RII 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 Fc epsilon RI + RII 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: Both

What it does not mean

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

Key facts

  • Fc epsilon RI + RII Ab [Units/volume] in Serum
  • Fc epsilon RI + RII Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Chronic Urticaria Index; CU Index; Fc epsilon R1; Fce; FceRI; High affinity IgE receptor; 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

Fc epsilon RI + RII Ab Qn (S)Fc epsilon RI + RII Ab [Units/volume] in SerumFc epsilon RI + RII Ab Ser-aCncFc epsilon RI + RII AbSEROFc Epsilon RI + RII antibody, BloodACnc

Frequently asked questions

Code details

Code55141-6
SystemLOINC
Display nameFc epsilon RI + RII Ab Qn (S)
DescriptionFc epsilon RI + RII Ab
Short nameFc epsilon RI + RII Ab Ser-aCnc
ComponentFc epsilon RI + RII Ab
PropertyACnc
TimingPt
System (specimen)Ser
ScaleQn
ClassSERO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.27
Last changed2.73

Consumer names

Fc Epsilon RI + RII antibody, Blood

Part names

Fc epsilon RI + RII 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.