Test Results For:
Prothrombin Time & INR
Test Overview
- Test Name
-
Prothrombin Time & INR
- Test Code
- PTINR
Short Description
PT-INR
Test Name
Prothrombin Time & INR
Test Code
PTINR
Category
Haemostasis
TAT
Main Lab:
4
Hour(s)
Family Site:
<4hrs
Specimen(s)
1 x Venous blood - 5 mL Tube - Light Blue - Citrated Plasma
Specimen Type
Citrated Plasma
Specimen Format
Tube
Specimen Colour
Light Blue
Specimen Volume
5 mL
Sampling Order
1
Origin
Venous blood
Collection Time after baseline
-
Transport Temperature
15-25°C
Accepted Other Specimens
-
TAT
Main Lab:
4
Hour(s)
Family Site:
<4hrs
Test Stability
Room Temp:
24 Hour(s)
2–8°C:
-
Methodology
-
Specimen Type
Citrated Plasma
Delay before pre-treatment
24
Transport temperature
15-25°C
Test stability at room temperature
24 Hour(s)
Test stability at 2–8°C
- -
Haemolysis interference
No
Methodology
-
Specimen Type
Citrated Plasma
Delay before pre-treatment
24
Transport temperature
15-25°C
Test stability at room temperature
24 Hour(s)
Test stability at 2–8°C
- -
Haemolysis interference
No
Methodology
-
Specimen Type
Citrated Plasma
Delay before pre-treatment
24
Transport temperature
15-25°C
Test stability at room temperature
24 Hour(s)
Test stability at 2–8°C
- -
Haemolysis interference
No
Methodology
-
Specimen Type
Citrated Plasma
Delay before pre-treatment
24
Transport temperature
15-25°C
Test stability at room temperature
24 Hour(s)
Test stability at 2–8°C
- -
Haemolysis interference
No
Methodology
-
Specimen Type
Citrated Plasma
Delay before pre-treatment
24
Transport temperature
15-25°C
Test stability at room temperature
24 Hour(s)
Test stability at 2–8°C
- -
Haemolysis interference
No
Methodology
-
Specimen Type
Citrated Plasma
Delay before pre-treatment
24
Transport temperature
15-25°C
Test stability at room temperature
24 Hour(s)
Test stability at 2–8°C
- -
Haemolysis interference
No
Methodology
Clotting: Waterbath method
Specimen Type
Citrated Plasma
Delay before pre-treatment
24
Transport temperature
15-25°C
Test stability at room temperature
24 Hour(s)
Test stability at 2–8°C
- -
Haemolysis interference
No
Methodology
Clotting: Waterbath method
Specimen Type
Citrated Plasma
Delay before pre-treatment
24
Transport temperature
15-25°C
Test stability at room temperature
24 Hour(s)
Test stability at 2–8°C
- -
Haemolysis interference
No
Clinical Interest
Screening test for abnormalities of clotting factors involved in the extrinsic pathway (II, V, VII, X, and fibrinogen). It is also used to monitor Warfarin therapy and to assess patients with hereditary and acquired clotting disorders.
Clinical Information Required
Anticoagulant_treatment
Patient Collection Note
A completely filled tube is necessary because the correct ratio of blood to citrate is critical (9:1). Mix by gentle inversion 3-4 times. Do not uncap.
LOINC Code
-
Outwork
No