Haematology Test Information
Unless otherwise specified, sample type required is venous blood in EDTA anticoagulant.
Routine hospital turnaround times listed in each test refer to the average time taken from receipt in the laboratory to authorisation, while routine GP turnaround times refer to the average time between when they are collected by the transport and authorisation. They are not guaranteed maximum turnaround times, as delays in transport would lead to delays in analysis, and sequential tests may be required to provide appropriate results therefore potentially delaying reporting. A list of sequential tests is available in the Sequential Testing section.
"Working day" refers to Monday to Friday 08:00-17:00 (not including Bank Holidays).
For bone marrow film examinations, obtain slides from the Haematology laboratory.
Full blood count samples are retained for 3 days during which certain additional requests may be processed (see individual tests below for any specific requirements). Please note that blood films made on samples older than 24 hours will not be viable for examination due to morphological changes induced by the anticoagulant.
Additional INR and D Dimer tests on coagulation samples already in the laboratory may be requested up to 24 hours after the sample was originally taken. Due to the half-life of certain clotting factors, other coagulation tests are ideally performed on fresh samples.
For add-on tests to be performed, a request form must be sent to the laboratory indicating that the request is for add-on testing.
Direct Antiglobulin Test/Direct Coombs Test (DAT/DCT)
Full Blood Count (FBC)
Erythrocyte Sedimentation Rate (ESR)
Paediatric Erythrocyte Sedimentation Rate (ESRP)
Body Fluid Analysis
Malaria Rapid Diagnostic Test (RDT)
Paul Bunnell Screen
Low Molecular Weight Heparin (anti Xa)
Liver Screen PT
Pre & Post Filtration
Lupus Anticoagulant Screen
von Willebrand Factor (vWF) and Collagen Binding Assay
Coagulation Factor Assay
Factor XIII Antigen Assay
Important note: All sendaway tests are either requested exclusively by Haematology consultants or laboratory staff, or can be requested by other clinical staff only if a Haematology consultant has authorised the request.
All overdue sendaway requests are pursued routinely by laboratory staff. If there are any issues regarding pending results from a sendaway test, please contact this laboratory on extension 8453 rather than the reference laboratory.
Haemochromatosis HFE gene testing is dealt with by Specimen Reception (x8468).
Leukaemia/Lymphoma phenotyping referral
Molecular testing referral
BCR-ABL Ratio Analysis (Diagnosis by FISH)
BCR-ABL Ratio Analysis (Monitoring by PCR)
BCR-ABL Ratio Analysis (Monitoring for Trial Patients)
Bone marrow trephine referral
Bone marrow aspirate referral
Chromosomal Analysis, FISH & Cytogenetics
Paroxysmal Nocturnal Haematuria (PNH)
Tissue Typing for Bone Marrow Transplant
Flow cytometry referral
HLA B27 referral
Coagulation Factor Inhibitor Screen
vWF Cleaving Protease (ADAMTS13) Assay
Coagulation test referral (Non-molecular)
Coagulation test referral (Molecular)
Platelet Function Assay
Platelet aggregation studies
vWF Multimers Assay
PIVKA II and vitamin K levels
Red Cell Adenosine Deaminase
PML/RARA (Monitoring & Trial Patients)
Abnormal Haemoglobin referral (Globin chain analysis)
Abnormal Haemoglobin referral (Haemoglobin variant)
Rare inherited anaemia
HLH syndrome (Haemophagocytosis)
Immunoglobulin Gene Mutation
Next Gene Sequencing - Myeloid
Minimal Residual Disease Monitoring - ALL
Minimal Residual Disease Monitoring - AML