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Results Line and Enquiries

0203 313 5353

Accreditation

How can I obtain UKAS Accreditation information for North West London Pathology (NWLP) services?

NWLP operates UKAS accredited medical laboratories as per the references below. Please note that tests performed on site at West Middlesex University Hospital and Hillingdon Hospital are not accredited.

The current scope of accreditation for all NWLP’s laboratories can be found on the UKAS website

See the following UKAS ref numbers:

  • Clinical Biochemistry Ref: 8673
  • Haematology and Blood Transfusion Ref: 8674
  • Infection & Immunity Sciences (Including Immunology, Virology, Microbiology and Histocompatibility and Immunogenetics ) Ref: 8659
  • Cellular Pathology (Including Histopathology, Cytology and Molecular Pathology) Ref: 9615

If you require copies of our certificate of accreditation and associated documentation please contact us using the Pathology Queries email address.

UKAS requires the laboratories to be accredited for a particular repertoire/scope (ISO15189), any changes or additions to repertoire require assessment by UKAS (extension to scope). 

There are some assays performed by North West London Pathology laboratories that must be reported as not accredited for the one of the following reasons:

  1. The material tested does not come under the scope of the ISO standard 15189:2012 which pertains to the testing of material of human origin. 
  2. The reagent manufacturer and laboratory may be able to validate the performance of a particular test for some sample types but it is not feasible to validate the test for others because of insufficient data. 
  3. There may be insufficient mechanisms available for some less commonly performed tests in the form of external quality assurance schemes or independent quality control material to provide evidence to UKAS that the test performance meets the requirements of the ISO Standard.
  4. A new assay/test has been introduced and is awaiting assessment by UKAS (as described above).
  5. A change in equipment/methodology requires the laboratory to apply for an extension to scope to accreditation and the tests performed are awaiting assessment by UKAS (as described above).

Where an assay cannot be accredited, one of the following statements will appear in the Notes section of the test information in the Test Directory of the website. 

“The laboratory is not UKAS accredited for this test”

 “The laboratory is not UKAS accredited for this test for this sample type.”

“The laboratory is not UKAS accredited for this test due to a change in equipment/assay.”