Pathology Handbook

CD4 CD8 count

Synonyms

HIV monitoring : CD4

Clinical Indications

Test used for monitoring the treatment of known positive HIV patients.

Request Form 

Request on ICE

Availability

Daily: Routine working day

Specific Criteria

Requested by Consultant Haematologist or if agreed with Consultant Haematologist

Patient Preparation

None

Turnaround Time

2 days

Specimen

EDTA

Vacutainer purple top

Volume

4.5 ml

Container

Purple top (EDTA) tube

Collection

Samples should be transported to laboratory immediately and be delivered before 16:30 hrs Mon-Thurs and 12:00 mid-day on Friday.

Causes for Rejection

Incorrect sample labelling; insufficient / clotted or haemolysed. Sample too old for testing. Not meeting specific patient criteria for analysis.

Reference Range

See patient test report