New Search

Laboratory Test Directory



Name Method Department Units
CD45 RO/RA Flow cytometry
Core Lab, Flow Cytometry %

Battery Members

CD3, CD4, CD8, CD45, CD3/RA, CD3/RO, CD3 transitional, CD4/RA, CD4/RO, CD4 transitional, CD8/RA, CD8/RO, CD8 transitional

Specimen Requirements

Whole blood

Container Type Container Size Specimen Volume

Purple tube (EDTA)

3 mL 3 mL

Purple tube (EDTA)

Micro sample tube 0.5 mL

Room temperature - 24 hour(s)

Specimen Preparation

  • Do not centrifuge
  • Keep at room temperature
  • Transport to laboratory as soon as possible
  • Mix by gentle inversion immediately after collection
  • If using microtainer for collection, 2 full (0.5 mL) microtainers are desired

Reasons for Rejection

  • Specimen received on wrong day of week.
  • Not received within specified time frame
  • Clotted specimen
  • Refrigerated specimen
  • Wrong collection tube


If using microtainer for collection, 2 full (0.5 mL) microtainers are desired. Testing is setup Monday through Friday but not on national holidays. Contact Flow Cytometry Lab at 614-722-5482 with questions about the setup schedule and specimen acceptibility. Specimens collected on Friday must be received in the flow cytometry lab by 1:00 p.m. (unless approved by Pathologist). Test is not setup on Saturday or Sunday. However, samples can be collected on Sunday afternoon for testing on Monday (but not if Monday is a national holiday). Samples are stable for 24 hours at room temperature (do not refrigerate).

CPT Code

  • 88184
  • 88185 (x5)