Pathology Handbook

Rituximab monitoring

Synonyms

CD 19/20 levels

Clinical Indications

Test used for monitoring levels of CD20+ cells in Rheumatoid Arthritis (RA ) patients receiving Rituximab therapy.

Test Includes

-

Part of Profile

-

Request Form 

Request via ICE

Availability

Daily: Routine working day before 16:30h Mon-Thurs and 14:00h on Friday.

Specific Criteria

Includes FBC and flow cytometry. Only tested on RA patients on Rituximab therapy and if requested by a Rheumatology Consultant

Patient Preparation

None

Turnaround Time

2 Days

Specimen

EDTA

Volume

4.5 ml

Container

Purple top (EDTA) tube

Vacutainer purple top

Collection

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

Causes for Rejection

Samples received after 14.00h on Fridays will not be tested.

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