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Laboratory Test Directory

B Cell ALL MRD Bone Marrow Testing


Name Method Department Units
BALL MRD Bone Marrow Testing Flow cytometry
Core Lab, Flow Cytometry %

Battery Members

CD20, CD10, CD38, CD19, CD58, CD45, CD9, CD13, CD33, CD34, CD3, CD71, CD22

Specimen Requirements

Bone marrow

Container Type Container Size Specimen Volume

Purple tube (EDTA)

4 mL 4 mL

Green tube (Sodium heparin), No Gel

3 mL 3 mL

Refrigerated - 24 hour(s)

Specimen Preparation

  • Mix by gentle inversion immediately after collection
  • Keep refrigerated

Reasons for Rejection

  • Wrong type of specimen
  • Wrong collection tube


MRD (minimally residual disease) testing for B-Cell ALL is performed on day 29 of treatment (end of induction), end of consolidation, for relapses or re-evaluation of B-Cell ALL.The COG (Children's Oncology Group) panel is utilized. 3-4ml of bone marrow in EDTA (purple) or Sodium Heparin (no gel) is required for testing.  Testing is performed Monday through Friday but not on national holidays.  Friday samples should be received in the laboratory before 1pm.  If collection/receipt will be after 1pm on Friday, please call Flow cytometry (614-722-5482) for notification.  On-call staff will perform testing outside of regular department hours.  Please call Flow Cytometry with any questions. An additional charge from PPAC (Pediatric Pathology Associates) will be billed for the interpretation.

CPT Code

  • 88184
  • 88185 (x12)