CD4/8 counts (T Lymphocyte subsets)

 

Alternative names, keywords

 

Samples required

EDTA blood (purple cap/ black cap ring, 4 mL tube). Smaller tubes are available for paediatric samples.

Must be tested within 48 hours – stored locally at room temperature. Not tested at weekends or Bank Holidays, however samples may be tested on Saturday mornings provided they arrive before 10am.

Test indications

For immune monitoring (e.g. HIV+ patients). Not to be used as a surrogate for serological HIV testing.

Reference range



  CD4 CD8 T cells (CD3+)
  %

Absolute count

(106/L, cells/µL)

%

Absolute count

(106/L, cells/µL)

%

Absolute count

(106/L, cells/µL)

Adult

28 - 57 300 - 1400 10 - 39 200 - 900 55 - 83 700 - 2100

Source: Comans-Bitter et al, Netherlands 1997, n=51

 

  CD4 CD8 T cells (CD3+)
Paediatric %

Absolute count

(106/L, cells/µL)

%

Absolute count

(106/L, cells/µL)

%

Absolute count

(106/L, cells/µL)

1 day to 1 week 17 - 52 400 - 3500 10 - 41 200 - 1900 28 - 76 600 - 5000
1 week to 2 months 41 - 68 1700 - 5300 9 - 23 400 - 1700 60 - 85 2300 - 7000
2 to 5 months 33 - 58 1500 - 5000 11 - 25 500 - 1600 48 - 75 2300 - 6500
5 to 9 months 33 - 58 1400 - 5100 13 - 26 600 - 2200 50 - 77 2400 - 6900
9 to 15 months 31 - 54 1000 - 4600 12 - 28 400 - 2100 54 - 76 1600 - 6700
15 to 24 months 25 - 50 900 - 5500 11 - 32 400 - 2300 39 - 73 1400 - 8000
2 to 5 years 23 - 48 500 - 2400 14 - 33 300 - 1600 43 - 73 900 - 4500
5 to 10 years 27 - 53 300 - 2000 19 - 34 300 - 1800 55 - 78 700 - 4200
10 to 16 years 25 - 48 400 - 2100 9 - 35 200 - 1200 52 - 78 800 - 3500

 

Turnaround time

Results within 2 working days.

Enquiries

Haematology (Immunohaematology)