Test BackgroundThe immune system is dependent on adequate numbers of functionally competent cells to protect the body from invading micro-organisms. A variety of tests are available but, before selecting these, exclude cytopenia with a full blood count and differential. The tests are divided into two panels, mitogens and antigens.
Clinical Indications Suspected immunodeficiency
Sample Required 10-20 mL heparin (green top) for adults
5-10 mL heparin (green top) for children
Do not separate or refrigerate
Test within 24 hours
Sample Volume See above
Turnaround Time 10 days
NotesTest must be pre-arranged with Charing Cross Laboratory on ext. 10130.
Not performed for HIV positive patients.
Not currently performed in house; this test is referred to the Camelia Botnar Laboratories at Great Ormond Street Hospital, London.