LOINCActiveBoth

LOINC Code 46224-2: Coagulation (PPP) [Time]

46224-2 is a LOINC code used to identify Coagulation (PPP) [Time] 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 Coagulation. It is commonly used with the system or sample type PPP.

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 Coagulation. 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: Coag.thrombin induced.after addition of heparinase

What it does not mean

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

Key facts

  • Thrombin time after addition of heparinase in Platelet poor plasma by Coagulation assay
  • Coagulation
  • Clot; Clottable; Coag; Coagulation assay; Hematology; Heme; Plas; Platelet poor plasma; Point in time; QNT; Quan; Quant; Quantitative; Random; Throm; Tilt tube; TT; TT P Hpase

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

Coagulation (PPP) [Time]Thrombin time after addition of heparinase in Platelet poor plasma by Coagulation assayTT P Hpase PPPCoagulationCOAGCoagulation, BloodTime

Frequently asked questions

Code details

Code46224-2
SystemLOINC
Display nameCoagulation (PPP) [Time]
DescriptionCoagulation
Short nameTT P Hpase PPP
ComponentCoagulation
PropertyTime
TimingPt
System (specimen)PPP
ScaleQn
MethodCoag.thrombin induced.after addition of heparinase
ClassCOAG
Example unitss
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.19
Last changed2.82

Consumer names

Coagulation, Blood

Part names

CoagulationTimePtPPPQnCoag.thrombin induced.after addition of heparinaseTime (e.g. seconds)Point in time (spot)Platelet poor plasmaThrombin time after addition of heparinase

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 46224-2 | HealthAssure