Coagulation Screen

From Taranaki Lab Manual

Tests:Coagulation Screen
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Overview

Department Haematology
Test Code CS
Constituent Tests APTT

Fibrinogen

INR

Thrombin Clotting Time

Synonyms Clotting  

Coagulation Profile  

APTT  

Prothrombin Ratio (PR)  

Thrombin Clotting Time (TCT)  

Activated Partial Thromboplastin Time (APTT)  

Fibrinogen (FIB)

Turnaround Time 0.5-4 hrs  
Stability – Add test 24 hours at room temperature (INR, PR FIB, TCT)  

12 hours at room temperature (APTT)

Specimen Requirements

Specimen Type Plasma
Specimen Transportation
Preferred 2.7 mL Na citrate tube Blue-Top  
Acceptable
Pediatric Requirements   1 mL Paediatric Na citrate Blue-Top    

Aliquot Requirements

Sample Type
Minimum Volume
Aliquot Transportation

Clinical Information

Reference Intervals Includes Prothrombin ratio, APTT, FIB and TCT.  
PR   0.8-1.2 ratio  
APTT   23-38  seconds  
FIB           1.5-4.0 g/L  
TCT         <21    seconds  
Test Method Mechanical clot detection performed on Stago Compact Max2 Analyser  
Advanced Notice Not required    
Patient Preparation Not required    

Comments

Please indicate if patient is on anticoagulants so the appropriate reference range is reported.  

This includes, but is not limited to Warfarin, unfractionated heparin, Dabigatran, and Rivaroxaban. Please give full clinical details including all medication.