LOINCActiveObservation

LOINC Code 52117-9: Bx Ab Ql

52117-9 is a LOINC code used to identify Bx Ab 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 B little x Ab. 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 B little x Ab. 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: Observation

What it does not mean

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

Key facts

  • Bx Ab [Presence] in Serum or Plasma
  • B little x Ab
  • A subgroup of anti-B
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; BLOOD BANK; Bx; Ordinal; Pl; Plasma; Plsm; Point in time; PR; 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

Bx Ab QlBx Ab [Presence] in Serum or PlasmaBx Ab SerPl QlB little x AbBLDBKBx antibody, BloodPrThr

Frequently asked questions

Code details

Code52117-9
SystemLOINC
Display nameBx Ab Ql
DescriptionB little x Ab
Short nameBx Ab SerPl Ql
ComponentB little x Ab
PropertyPrThr
TimingPt
System (specimen)Ser/Plas
ScaleOrd
ClassBLDBK
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.24
Last changed2.56

Consumer names

Bx antibody, Blood

Part names

B little x AbPrThrPtSer/PlasOrdBx AbPresence 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 52117-9 | HealthAssure