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Term Description

The activated clotting time (ACT) of blood is a measure of the amount of time for a fibrin clot to form in the presence of a known amount of kaolin activator.

Part Description

LP207644-8   Activated clotting time
The activated clotting time (ACT) measures the time to clot formation after addition of an activator, and is used primarily to monitor a patient's coagulation status during surgery, especially procedures during which patients are on cardiopulmonary bypass. The activator may stimulate the intrinsic and/or extrinsic coagulation pathway, and commonly used activators include kaolin, Celite and glass beads. Various anticoagulant drugs can be used to prevent clot formation and consumption of platelets during surgery. The most common is unfractionated heparin because it has a short half-life and is easily reversed. Baseline ACT and subsequent ACT measurements during and after the procedure help determine the initial heparin dose and titration parameters to achieve a stable level of anticoagulation during surgery, as well as appropriate reversal of anticoagulation after surgery. The ACT can be affected by platelet count, platelet function, temperature of the blood, and acquired or inherited hematologic conditions. The ACT is a point of care test used to monitor patients receiving high doses of heparin in an acute setting, while partial thromboplastin time (PTT) is used to monitor patients who are on lower, long-term therapeutic doses of heparin. Source: Regenstrief LOINC, Lab Tests Online: Activated Clotting Time

LOINC Names Get Info

Fully-Specified Name
Activated clotting time:Time:Pt:Bld:Qn:Coag.kaolin induced
Long Common Name
Activated clotting time (ACT) of Blood induced by Kaolin
Short Name
ACT Bld KCT
Display Name
ACT Kaolin activated time (Bld)
Consumer Name Alpha Get Info
Activated clotting time, Blood

Part Model Get Info

  • Component
    Activated clotting time
    LP207644-8
    • Analyte
      Activated clotting time
      LP207644-8
      • Component Numerator
        Activated clotting time
        LP207644-8
        • Component Numerator Core
          Activated clotting time
          LP207644-8
        • Component Numerator Core Suffix
          NULL
           
      • Component Denominator
        NULL
         
        • Component Denominator Core
          NULL
           
        • Component Denominator Core Suffix
          NULL
           
    • Challenge
      NULL
       
    • Adjustment
      NULL
       
    • Count
      NULL
       
  • Property
    Time
    LP6879-3
  • Time
    Pt
    LP6960-1
  • System
    Bld
    LP7057-5
    • System Core
      Bld
      LP7057-5
    • Super System
      NULL
       
  • Scale
    Qn
    LP7753-9
  • Method
    Coag.kaolin induced
    LP207642-2

Basic Attributes

Class
COAG
Type
Laboratory
First Released
Version 2.56
Last Updated
Version 2.82 (NAM)
Change Reason
Release 2.69: METHOD_TYP: Make model consistent with new Microviscometry terms.; COMPONENT: Make model consistent with new Microviscometry terms.;
Order vs. Observation
Both
Common Test Rank Get Info
14245

Member of these Panels

LOINCLong Common Name
81281-8Heparin dose response panel - Blood

Language Variants Get Info

TagLanguageTranslation
cs-CZCzech (Czechia)Aktivovaný koagulační čas (ACT).kaolinem indukovaný:Čas:Časový bod:Krev:Kvantitativní:Koagulační test
el-GRGreek (Greece)Ενεργοποιημένος χρόνος πήξης.προκληθείς από καολίνη:Time:Pt:Αίμα:Qn:Coag
Synonyms: Coag Pt Qn Time Αίμα Ενεργοποιημένος χρόνος πήξης Ενεργοποιημένος χρόνος πήξης.προκληθείς από καολίνη Χρόνος πήξης
es-ESSpanish (Spain)Tiempo de activación del coágulo:Tiempo:Punto temporal:Sangre:Qn:Método inducido por caolín
Synonyms: Cuantitativo
es-MXSpanish (Mexico)Tiempo de coagulación activado inducido por caolín:Tiempo (por ejemplo, segundos):Punto temporal:Sangre:Cuantitativo:Ensayo de coagulación
fr-CAFrench (Canada)Temps de la coagulation activée:Durée:Temps ponctuel:Sang:Quantitatif:Test de coagulation.kaolin induite
fr-FRFrench (France)Temps de coagulation activé induit par le kaolin:Temps:Ponctuel:Sang:Numérique:Coagulation
it-ITItalian (Italy)Tempo di coagulazione attivato:Tempo:Pt:Sangue:Qn:Coag.indotta da caolino
Synonyms: Coagulazione indotta da caolino Punto nel tempo (episodio) Sangue Studio di coagulazione Tempo (e.g. secondi) Test di coagulazione
nl-NLDutch (Netherlands)geactiveerde stollingstijd:tijd:moment:bloed:kwantitatief:kaolinegeïnduceerde stolling
Synonyms: ACT; activated clotting time coagulatiemethode
pl-PLPolish (Poland)Aktywowany czas krzepnięcia.indukowany kaolinem:czas:punkt w czasie:krew:ilościowy:test krzepnięcia
Synonyms: Aktywowany czas krzepnięcia indukowany kaolinem
zh-CNChinese (China)活化凝血时间:时间:时间点:全血:定量型:凝血功能分析.白陶土诱导型
Synonyms: ACT;激活凝血时间;Activated clotting time 倾斜试管;倾斜试管法;凝固测定;凝血功能测定;凝血测定;快速凝固试验;快速凝血试验;快速凝集试验 凝固 凝固时间;血液凝固时间 凝血功能;凝血功能试验;凝血过程;血液凝固;血液凝固功能;血液凝固过程 凝血功能分析.白陶土（高岭土、瓷土）诱导型 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 时刻;随机;随意;瞬间 时间(如秒);时间(如秒数) 血;血液

Example Units

UnitSource
sExample UCUM Units

LOINC Terminology Service (API) using HL7® FHIR® Get Info

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=80659-6