Anticoagulant control tests

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Here is a list of the anticoagulant control tests carried out by the Haematology department, together with specimen requirements and the estimated time it will take to produce a result.

The results availability times given here represent the time generally required to produce a result following receipt of the sample in the laboratory. Sample transport times are not included.

Where appropriate, if a result is required the same day samples must be received sufficiently early to allow completion of the test. Contact the lab if the test you require is not listed.

These tests are available during the normal working day. See a list of haematology tests available outside core working hours.


(Performed at ORC/Trafford)

Specimen requirements Results available (from time of receipt in lab)
Urgent Non-urgent Reports available

Heparin control


Green cap vacutainer [1.3ml neonate, 2.9ml paediatric or adult] 60 min 3hr 24 hours

Oral Anticoagulant Control (INR)


As above 60 min 3hr 24 hours

LMWH assay


As above 60 min 3hr 24 hours

DOAC assay


As above 120 min 48hr 24 hours


(Last reviewed November 2019)