CD 19/20 levels
Test used for monitoring levels of CD20+ cells in Rheumatoid
Arthritis (RA ) patients receiving Rituximab therapy.
Part of Profile
Request via ICE
Daily: Routine working day before 16:30h Mon-Thurs and 14:00h on
Includes FBC and flow cytometry. Only tested on RA patients on
Rituximab therapy and if requested by a Rheumatology Consultant
Purple top (EDTA) tube
Samples should be transported to laboratory immediately and be
delivered before 16:00 hrs Mon-Thurs and 12:00 midday on
Causes for Rejection
Samples received after 14.00h on Fridays will not be tested.
Incorrect sample labelling; insufficient/ clotted or
Sample too old for testing.
Not meeting specific patient criteria for analysis
See patient test report