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Prothrombin Time (PT) International Normalise Ratio (INR)

Test Code:

CG0110

Synonym(s):

 

Specimen Container

Sodium Citrate Tube

Specimen Requirement

Citrated Whole Blood
Adult: 2 mL
Paediatric and Neonate: 1 ml
Gently invert the tubes several times to prevent clotting
To collect blood to the designate marking. Over or under filling will compromise the test results.

Specimen Storage / Transport

Method

 

Orderable as STAT?

Yes

Turn Around Time

Stat: 1 hr
Routine: 2 - 3 hrs

Reference Value(s)

Age Group Gender Reference Intervals (secs)
0 mins - 2 days both 14.4 - 16.4
3 days - 30 days both 13.5 - 16.4
31 days - 11 month both 11.5 - 15.3
1 years - 5 years both 12.1 - 14.5
6 years - 10 years both 11.7 - 15.1
11 years - 16 years both 12.7 - 16.1
17 years and above both 11.6 - 14.2
 
Recommended INR range for oral anticoagulation (warfarin): 2.0 - 3.5

Testing Laboratory Location

KKH

Laboratory

Haematology

Contact Number

6394 1373

Day and Time Performed

Daily, 24 hrs

Orderable on CPOE?

Yes

Downtime Form

Additional Information

 

Change History Notes

Others

Keywords

"Prothrombin Time (PT) International Normalise Ratio (INR)" PT/INR CG0110
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