Coagulation factor assays

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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.

 

Wythenshawe Laboratory – Please note from 12.05.21 Only Sarstedt tubes will be in use, until then BD/Becton Dickinson sample collection tubes are used for adults and Sarstedt for paediatric patients. Please see Wythenshawe Pathology handbook for further details.

Test

(performed at ORC/Trafford

Wythenshawe)

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

As above 3 hr < 5 days < 5 days

Factor IX assay

(ORC/W)

As above 3 hr < 5 days < 5 days

Factor X assay

(ORC)

As above 3 hr < 10 days < 10 days

Factor XI assay

(ORC/W)

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/W)

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 April 2021)