Department

Immunology

Preferred Sample Type

Suitable Specimen Types

EDTA Whole Blood

4 mL of whole blood in EDTA tube, minimum volume of 0.5 mL

Sample Processing in Laboratory

Usual

Turnaround Time

3 days

Sample Stability

Lymphocyte phenotyping stability has been validated up to 48 hours post venepuncture. Samples received >48 hours old will not be tested Where sample collection data is unavailable to the laboratory, validity of results is uncertain.

T Lymphocyte subsets: CD3, CD4, CD8

General Information

Some indications:Secondary Immunodeficiency inc. HIV

Analytical measuring range:

Aquios LOD

Results beyond the stated analytical measuring range are not within the scope of ISO 15189:2022 accreditation; interpret with caution. For reference ranges please see section below.

Patient Preparation

None

Notes

Samples are not processed out of hours. Please ensure that samples collected on Friday reach the laboratory before 4pm.

Reference Range

Age Dependant

Immunophenotyping of blood lymphocytes in childhood reference values for lymphocyte subpopulations. Cooman-Bitter WM, de Groot R et al. J paediatrics 1997,130 pp388-393

Specifications

EQA Scheme?: Yes
EQA Status:
NEQAS eqa scheme for immune monitoring