Coagulation factor assays

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Here is a list of the coagulation factor assays 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.

Test

 

(performed at ORC/Trafford)

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

Factor II assay

 

(ORC)

Green cap vacutainer [1.3ml neonate, 2.9ml paediatric or adult] 3 hr < 10 days < 10 days

Factor V assay

 

(ORC)

Green cap vacutainer [1.3ml neonate, 2.9ml paediatric or adult] 3 hr < 10 days < 10 days

Factor VII assay

 

(ORC)

As above 3 hr < 10 days < 10 days

Factor VIII assay

 

(ORC)

As above 3 hr < 5 days < 5 days

Factor IX assay

(ORC)

As above 3 hr < 5 days < 5 days

Factor X assay

 

(ORC)

As above 3 hr < 10 days < 10 days

Factor XI assay

 

(ORC)

As above 3 hr < 10 days < 10 days

Factor XII assay

 

(ORC)

As above 3 hr < 10 days < 10 days

Factor VIII inhibitors

(ORC)

2x Green cap vacutainer [1.3ml neonate, 2.9ml paediatric or adult] 3 hr < 1 month < <1 month

Factor IX inhibitors

 

(ORC)

2x Green cap vacutainer [1.3ml neonate, 2.9ml paediatric or adult] 3 hr < <1 month < <1 month

Platelets Aggregation Studies

 

(ORC)

Contact lab – ext 12123 Same day by arrangement by arrangement < 5 days

von Willebrand factor activity

(ORC)

Green cap vacutainer [1.3ml neonate, 2.9ml paediatric or adult] 3 hr < 1 month < 1 month

von Willebrand Factor

(ORC)

Green cap vacutainer [1.3ml neonate, 2.9ml paediatric or adult] 3hr < 1 month < 1 month

Ristocetin induced platelet aggregation (RIPA)

 

(ORC)

Contact lab – ext 12123 Same day by arrangement <5 days

(Last reviewed October 2018)