LOINCActiveBoth

LOINC Code 17723-8: T. pallidum Ab Immobilization Ql (S)

17723-8 is a LOINC code used to identify T. pallidum Ab Immobilization 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 Treponema pallidum 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 Treponema pallidum 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
  • Method: Immobilization

What it does not mean

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

Key facts

  • Treponema pallidum Ab [Presence] in Serum by Immobilization
  • Treponema pallidum Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; ID; Infectious Disease; InfectiousDisease; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Serum; SR; Syphilis; T palldm; T pallidum; Treponemal

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

T. pallidum Ab Immobilization Ql (S)Treponema pallidum Ab [Presence] in Serum by ImmobilizationT palldm Ab Ser Ql ImmobTreponema pallidum AbMICROTreponema pallidum antibody, BloodPrThr

Frequently asked questions

Code details

Code17723-8
SystemLOINC
Display nameT. pallidum Ab Immobilization Ql (S)
DescriptionTreponema pallidum Ab
Short nameT palldm Ab Ser Ql Immob
ComponentTreponema pallidum Ab
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleOrd
MethodImmobilization
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

Treponema pallidum antibody, Blood

Part names

Treponema pallidum AbPrThrPtSerOrdImmobilizationPresence 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 17723-8 | HealthAssure