Immune Monitoring (CD4 quantification)

Blood Sciences Test

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Specimen

EDTA Blood

Special Instructions

None

Factors affecting results

Clotted samples cannot be tested

Reference Range

Age	CD3+	CD3/CD4+	CD3/CD8+
Neonatal	600-5000	400-3500	200-1900
1 week – 2 months	2300-7000	1700-5300	400-1700
2-5 months	2300-6500	1500-5000	500-1600
5-9 months	2400-6900	1400-5100	600-2200
9-15 months	1600-6700	1000-4600	400-2100
15-24 months	1400-8000	900-5500	400-2300
2-5 years	900-4500	500-2400	300-1600
5-10 years	700-4200	300-2000	300-1800
10-16 years	800-3500	400-2100	200-1200
Adults	700-2100	300-1400	200-900

Reference: Comans-Bitter et al, 1997

Test Usage

Monitoring of T-cell subsets in patients with a positive HIV diagnosis

Turnaround time

3 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