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TDL Trials: Quality Assurance

TDL TRIALS ensures that its staff and systems are ICH GCP compliant.

Good Clinical Practice (GCP) is a standard for the design, conduct, performance, monitoring, auditing, recording, analyses and reporting of clinical trials and provides assurance that the data and reported results are credible and accurate and that the rights, integrity and confidentiality of trial subjects are protected.

The Doctors Laboratory is committed to providing doctors who use the service with pathology of the highest quality. The quality of results is of fundamental importance and our laboratory operates to stringent technical and administrative standards.

Internal quality assurance is achieved by strict adherence to standard operating procedures for all analytical processes. TDL participates in all recognised National External Quality Assessment Schemes. These schemes are subscribed to by all NHS and private laboratories. Results are subjected to strict internal and external quality control. Details of the laboratories to whom TDL refers specialist testing are available from TDL Referrals. These laboratories are CPA accredited or of equal accreditation status. Details of the tests that are referred are given on the TDL website.

BIOCHEMISTRY: UKNEQAS, WEQAS
Clinical Chemistry
Lipid Components
Glycosylated Haemoglobin
C-Reactive Protein/High Sensitive Protein
Protein Imm. Screen (IgA, IgG, IgM)
Drugs of Abuse + Therapeutic Drugs
Total and Direct Bilirubin
Cardiac Markers
Pregnancy Test
Healthcontrol Therapeutic Drugs Scheme
Urine Clinical Chemistry

HAEMATOLOGY: UKNEQAS for
Haematology
Reticulocyte Count & Automated
Leucocyte Diff Count
Coagulation
Thrombophilia Profile inc. Lupus Anticoagulant
Abnormal Haemoglobins
Blood Group Serology (Inc. grouping,
antibody screening and identification, compatibility testing)
Blood Parasites/Blood Film
B12/Folate/Ferritin

IMMUNOLOGY: UKNEQAS for
HIV Serology
Hepatitis Serology, Immunity Screen Serology
Toxoplasma Serology
Autoimmune Testing Schemes 1–4
Rubella Serology
Chlamydia Detection
Syphilis Serology
Anti-Streptolysin Titre
Parvovirus B19 IgM
Phospholipid Antibodies

MICROBIOLOGY: UKNEQAS for
General Bacteriology
Antibiotic Susceptibility Testing
Parasitology
Mycology
AAFB Microscopy Mycobacterium Culture

ENDOCRINOLOGY: UKNEQAS for
Steroid Hormones
Peptide Schemes 1 to 4
Thyroid Scheme
Allergens Scheme
SHBG
Prostate Specific Antigen
Tumour Markers
PTH
Specific IgE/Total IgE
AFP/CEA

CYTOLOGY:
National External Assessment Scheme for Gynaecological Cytopathology
National External Assessment Scheme for the Evaluation of Papanicolaou Staining in
Cervical Cytology
US CytoQuest External Cytopathology Assessment Scheme

ANDROLOGY:
UKNEQAS

TDL GENETICS: NEQAS for
Constitutional Cytogenetics
Molecular Genetics
Histocompatibility and Immunogenetics
(includes Haemochromatosis,
HLA B27 and HLA identification)
Thrombophilia