Test Details

• Discipline:

  Haemostasis

  Haemostasis

• Specimen Container Adult:

  Light blue – sodium citrate

  Light blue – sodium citrate

• Specimen Container Paediatric:

  Light blue – sodium citrate

  Light blue – sodium citrate

• Minimum Volume Adult:

  2.7mL

  2.7mL

• Minimum Volume Paediatric:

  1.3mL

  1.3mL

• Special Requirement:

  Tube must be correctly filled to line, to ensure correct ratio of blood to anticoagulant, ensure adequate mixing. 

  Tube must be correctly filled to line, to ensure correct ratio of blood to anticoagulant, ensure adequate mixing. 

• Sample Stability:

  4 hours 

  4 hours 

• Transport Requirements:

  Samples should be transported to lab without delay  

  Samples should be transported to lab without delay  

• Freq Analysis:

  As required or weekly

  As required or weekly

• Add On Test:

  tnu-tr.bloodsciencesadditions@nhs.net (external)

  tnu-tr.bloodsciencesadditions@nhs.net (external)

• Quality Assurance:

  UK NEQAS  

  UK NEQAS  

• Factors Affecting Result:

  SynthAFax reagent must be mixed well by inversion several times prior to use

  SynthAFax reagent must be mixed well by inversion several times prior to use

• Other Info:

  The Refixia assay is a Factor IX assay which uses Hemosil SynthAFax as the APTT reagent 

  The Refixia assay is a Factor IX assay which uses Hemosil SynthAFax as the APTT reagent 

• Routine Contact Name:

  RVI or Freeman Section Leaders

• Routine Telephone:

  RVI: 0191 2820332, Freeman: 0191 2231195

  RVI: 0191 2820332, Freeman: 0191 2231195

• Routine Email:

  Emily.lloyd21@nhs.net

• Specialist Test:

  Yes

  Yes

• Specialist Contact Name:

  Haematology and Haemostasis Healthcare Scientist

  Haematology and Haemostasis Healthcare Scientist

• Specialist Telephone:

  0191 2139758

  0191 2139758

• Specialist Email:

  alison.brown93@nhs.net

  alison.brown93@nhs.net