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ID:891 Factor IX Assay
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DescriptionOne stage factor assay for FIX
Indication To investigate a bleeding tendency and to monitor treatment for haemophilia B patients (FIX deficiency).
Additional InfoUses an APTT based clotting method to perform a one stage assay. Only treatment assays done at LGI.
Concurrent TestsCoagulation Screen
Dietary RequirementsNone

InterpretationReported against a normal range

Ref. Range (Male)50 - 150
Ref. Range (Female)50 - 150
Ref. Range (Paed)See Comment
Ref. Range NotesFor paediatric reference ranges please refer to BJH Guideline 2002, 119, 295-309, The Investigation and Management of Neonatal Haemostasis and Thrombosis Critical telephone values: Any abnormal factor assay with clinical details: bleeding. Factor assys less than 10% (unless on a patient known to have a factor deficiency)

Other Help:National Laboratory Medicine Handbook

IP Acute TAT- Contact Laboratory
IP Routine TAT5 days
GP Acute TAT- Contact Laboratory
GP Routine TAT5 days
Turnround Comment
Originally edited by : RJAR. Last edited on 18/06/2019 10:32:29. Published By RJAR on 18/06/2018 10:32:29.