Test Details

• Discipline:

  Immunology

  Immunology

• Specimen Container Adult:

  Serum (SST or plain tube)

  Serum (SST or plain tube)

• Specimen Container Paediatric:

  Serum (SST or plain tube)

  Serum (SST or plain tube)

• Minimum Volume Adult:

  1 ml

  1 ml

• Minimum Volume Paediatric:

  1 ml

  1 ml

• Sample Stability:

  Unseparated sample: Unknown
  Separated sample: 24 hours at 15-25°C, 8 days at 2-8°C, 3 months at -20°C.

  Unseparated sample: Unknown
  Separated sample: 24 hours at 15-25°C, 8 days at 2-8°C, 3 months at -20°C.

• Freq Analysis:

  Daily

  Daily

• Add On Test:

  All urgent add ons via telephone on 0191 2821890, and must be confirmed via email to the appropriate email address

  nuth.autoimmunity@nhs.net

   

  All urgent add ons via telephone on 0191 2821890, and must be confirmed via email to the appropriate email address

  nuth.autoimmunity@nhs.net

   

• Quality Assurance:

  UK NEQAS for General Autoimmune Serology

  UK NEQAS for General Autoimmune Serology

• Interpretation:

  In Rheumatoid Arthritis the Rheumatoid Factor may be positive or negative, high titres are seen in progressive and extra-articular disease.

  In Rheumatoid Arthritis the Rheumatoid Factor may be positive or negative, high titres are seen in progressive and extra-articular disease.

• Reference Ranges:

  Normal Range: 0 - 19 IU/ml

  Normal Range: 0 - 19 IU/ml

• Other Info:

  Plasma- Lithium Heparin also acceptable. Serial monitoring of Rheumatoid Factor is not recommended, as there is not a useful correlation with disease activity.

  Plasma- Lithium Heparin also acceptable. Serial monitoring of Rheumatoid Factor is not recommended, as there is not a useful correlation with disease activity.

• Routine Contact Name:

  Autoimmunity Lab

• Routine Telephone:

  0191 282 1890

  0191 282 1890

• Routine Email:

  tnu-tr.Immunology@nhs.net

• Specialist Email:

  nuth.autoimmunity@nhs.net

  nuth.autoimmunity@nhs.net