Northern Devon Healthcare NHS Trust > Pathology Laboratory Handbook > Departments > Haematology > Haematology Tests > INR, International Normalised Ratio

INR, International Normalised Ratio

Name	INR
Tube Type	Blue (Sodium Citrate)
Reporting Units	N/A
Reference Range	PT 13 – 16s	INR 0.9 – 1.1
Availability	NDDH (24/7)
Target turnaround time	2 Hrs
Special requirements & notes	–
Patient preparation	N/A
Volume required	1 tube, must be full.
If delayed transport to lab, store:	In refrigerator 2 – 8^oC.
Factors affecting result interpretation	–
Time limit for add on test	24 Hours
Pathology discipline	Haematology
‘Lab Tests Online’ link	https://labtestsonline.org.uk/tests/pt

Last updated: May 28, 2020

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