Newcastle Laboratories

RAST testing

Clinical Background:

RAST testing is indicated in patients unsuitable for skin prick testing.

RAST testing is indicated in patients unsuitable for skin prick testing.

Test Details

  • Discipline:

    Immunology

    Immunology

  • Specimen Container Adult:

    Serum-SST

    Serum-SST

  • Specimen Container Paediatric:

    Serum-Plain tube

    Serum-Plain tube

  • Minimum Volume Adult:

    1 ml (more for each)

    1 ml (more for each)

  • Minimum Volume Paediatric:

    1 ml (more for each)

    1 ml (more for each)

  • Special Requirement:

    An extra volume of blood sample will be required for each extra allergen requested (0.5 ml per allergen).

    An extra volume of blood sample will be required for each extra allergen requested (0.5 ml per allergen).

  • Freq Analysis:

    Twice Weekly

    Twice Weekly

  • Add On Test:

    All urgent add ons via telephone on 0191 2821890, and must be confirmed via email to nuth.autoimmunity@nhs.net

    All urgent add ons via telephone on 0191 2821890, and must be confirmed via email to nuth.autoimmunity@nhs.net

  • Quality Assurance:

    UK NEQAS for Specific IgE

    UK NEQAS for Specific IgE

  • Interpretation:

    The significance of any result depends on the clinical context; a positive result does not mean that a particular allergen is responsible for clinical symptoms. A negative result for an allergen do...

    The significance of any result depends on the clinical context; a positive result does not mean that a particular allergen is responsible for clinical symptoms. A negative result for an allergen does not necessarily exclude an allergy.

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  • Reference Ranges:

    Normal Range: <0.35 kAU/L

    Normal Range: <0.35 kAU/L

  • Other Info:

    The request must specify which allergens are to be tested, where there is doubt please discuss with the laboratory or with an Immunologist. Reported as values in kAU/L. The significance of any resu...

    The request must specify which allergens are to be tested, where there is doubt please discuss with the laboratory or with an Immunologist. Reported as values in kAU/L. The significance of any result depends on the clinical context; a positive result does not mean that a particular allergen is responsible for clinical symptoms. A negative result for an allergen does not necessarily exclude an allergy. An extra volume of blood sample will be required for each extra allergen requested (0.5 ml per allergen).

    Read More
  • Routine Contact Name:

    Autoimmunity Lab

  • Routine Telephone:

    0191 282 1890

    0191 282 1890

  • Routine Email:

Availability:

Allergen specific IgE samples are tested twice a week, usually on Tuesday and Thursday.

Turn Around:

5 routine working days

Send To:

Department of Blood Sciences

Level 3
Leazes Wing
Royal Victoria Infirmary
Queen Victoria Road
Newcastle upon Tyne
NE1 4LP

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