LOINCActiveBoth

LOINC Code 40723-9: Heparin Ab Aggregometer Ql (PPP)

40723-9 is a LOINC code used to identify Heparin Ab Aggregometer Ql (PPP) 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 Heparin Ab. It is commonly used with the system or sample type PPP.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Heparin Ab. It is commonly used with the system or sample type PPP.

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: Aggregometer

What it does not mean

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

Key facts

  • Heparin Ab [Presence] in Platelet poor plasma by Aggregometer
  • Heparin Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; COAGULATION; HATT; Hematology; Heme; Hep; Hepar; Heparn; HIT; HITT; Ordinal; Plas; Platelet poor plasma; Point in time; PR; QL; Qual; Qualitative; Random; Screen

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

Heparin Ab Aggregometer Ql (PPP)Heparin Ab [Presence] in Platelet poor plasma by AggregometerHeparin Ab PPP Ql AggregometerHeparin AbCOAGHeparin antibody, BloodPrThr

Frequently asked questions

Code details

Code40723-9
SystemLOINC
Display nameHeparin Ab Aggregometer Ql (PPP)
DescriptionHeparin Ab
Short nameHeparin Ab PPP Ql Aggregometer
ComponentHeparin Ab
PropertyPrThr
TimingPt
System (specimen)PPP
ScaleOrd
MethodAggregometer
ClassCOAG
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.15
Last changed2.82

Consumer names

Heparin antibody, Blood

Part names

Heparin AbPrThrPtPPPOrdAggregometerPresence or ThresholdPoint in time (spot)Platelet poor 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 40723-9 | HealthAssure