Pathology Handbook

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INR

Alternative Names:PT
Prothrombin Time
Laboratory:Haematology
Test Code:INR
Specimen Types:Plasma
Container Types:
Sodium Citrate
Collection & Request Instructions:Add exactly 2.7 mL of blood & mix by inversion.

Prothrombin activity is expressed as the International Normalised Ratio (INR) and Prothrombin time (Sec)

Specimens cannot be analysed or re-analysed greater than 8 hours after collection.

Transport Instructions between Sites and/or Laboratories:Room Temperature