Factor X Antigen Assay

Coagulation

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Description

Factor X antigen may be used to help fully characterise the deficiency type in subjects with heritable factor X deficiency.

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Indications

Investigation of heritable FX deficiency. Detection of type 1 protein C deficiency in subjects who have been on Warfarin for several weeks and have stable INR within the therapeutic range. However, testing for protein C and protein S deficiency whilst on warfarin may not be reliable and is not recommended.

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Sample Type

Plasma (Citrate 2.7ml Blue) x 1

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Reference Range

REFERENCE RANGE IS INDICATED ON THE REPORT

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Turnaround Time

Within 4 weeks

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Testing Frequency

As Required

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External Notes

The accuracy of all coagulation tests is greatly influenced by pre analytical variables. It is essential that sample quality is given the highest of priorities. Samples which fail to meet quality criteria including age of sample, specimen fill (>90%), haemolysed, clotted or activated samples will be rejected and a repeat sample requested.

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Patient Preparation

No special requirements.

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See Also

PROTEIN C ANTIGEN, FVII ANTIGEN, FX ANTIGEN and THROMBOPHILIA SCREEN

Please note: the above information is subject to change and we endeavour to keep this website up to date wherever necessary.