Primary Immune Deficiency screen

Blood Sciences Test

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Specimen

EDTA Blood

Special Instructions

A full blood count must also be requested

Factors affecting results

Clotted samples cannot be tested

Reference Range

LYMPHOCYTE SUB-SET NORMAL RANGES

In Cells/ul

Age	CD3	CD4	CD8	CD19	NK	CD4/8 ratio
Birth – 1 week	600 – 5000	400 – 3500	200 – 1900	40 – 1100	100 – 1900	0.8 – 1.8
1 week –  9 months	2300 -7000	1400 -5300	400 – 2200	600 – 3000	100 – 1400	1.5 – 2.9
9 months -2 years	1400 -8000	900 – 5500	400 – 2300	600 – 3100	100 – 1400	1.5 – 2.9
2 year- 10 years	700 – 4500	300 – 2400	300 – 1800	200 – 2100	90 – 1000	1.0 – 600
10 years -16 years	800 – 3500	400 – 2100	200 – 1200	200 – 600	70 – 1200	1.1 – 1.4
16 years -50 years	800 – 2600	450 – 1700	250 – 1100	70 – 650	90 – 600	0.8 – 3.3
50 years -110 years	550 – 2400	320 – 1500	150 – 1200	60 – 500	120 – 660	0.7 – 4.9

Test Usage

To provide diagnostic information for the investigation of primary immune deficiency disorders.

Turnaround time

2 days

Availability

In House

 Clinical Advice

Clinical advice is available from the Immunology Medical Team at Derriford Hospital

T: 01752 431675

E: plh-tr.eden@nhs.net

Please note this assay is not UKAS accredited

 

Specimen Labelling Procedure