Factor Assays II, V, VII and X

Pathology category

Haematology

Code

Referral code

Request form

Standard

Test information

Factors II, V, VII and XPLEASE NOTE: THESE TESTS ARE NOT CURRENTLY ACCREDITED UNDER ISO 15189Note that paediatric samples (<18 y/o) will be referred to Special Coagulation DepartmentClinical Laboratory ServicesQE Hospital BirminghamMindelsohn WayBirminghamB15 2WB0121 371 5988

Guidelines

Pre-analytical

A full specimen bottle is required for accurate testing. Lipaemic samples may cause problems with testing. Specimens should be tested or frozen within 4 hours of collection.Sample transport should be at 4-25C and reach the laboratory ASAPPlease note: the samples must arrive the same day as collection otherwise they will be rejected by the laboratory

Reference range

50 – 150 %

Tube type

Tube type info

2.7ml Blue top citrate

Special requirements

Usually in discussion with lab.

Minimum volume

1 tube per factor minimum 90% full – essential to ensure 1:9 ratio of anticoagulant:blood

Assay frequency

As required

TAT Inpatient (urgent)

TAT Inpatient

4 weeks

TAT GP/Outpatient

4 weeks

Referral lab

Coagulation Department,University Hospital Birmingham NHS Foundation Trust,Queen Elizabeth Hospital,Birmingham