Methodology
Flow Cytometry
Synonyms
CD34 Absolute count
Specimen Type
Whole Blood
Performing Lab
UCSD Flow Cytometry (CALM)
Epic ID
Other Reference Test
Lab Test Days
Monday-Friday (no weekends or holidays)
Standard TAT
24 Hours from receipt of sample
Collection Information
Specimen Required
1-2 mL Whole Blood
Container Type
EDTA (Lavender-Top) Tube
Collection Instructions
Collect Monday-Thursday only, no Fridays, weekends or holidays. Whole blood collect in an ACD-A or heparin are also acceptable. Specimens must be drawn and delivered to CALM before 9 am to obtain results by noon. No STAT testing. Samples received after 4 pm will be run the next business day.
Processing Information - Lab Use Only
Transport Temperature
Refrigerated-Only
Specimen Stability
Room Temp: Unacceptable; Refrigerated: 24 Hours; Frozen: Unacceptable
Rejection Criteria
Fixed; hemolyzed; Clotted; Clumped
Test Volume Required
2 mL Whole Blood
Minimum Test Volume
1 mL Whole Blood
Processing Instructions
Specimens must be drawn and delivered to CALM before 9 am to obtain results by noon. No STAT testing. Samples received after 4 pm will be run the next business day. Complete a UCSD CALM Hematopathology/Flow Cytometry requisition and submit with specimen refrigerated Monday-Thursday only, no Fridays, weekends or holidays. Send with TForce route courier Monday-Thursday or call for a pick-up same day after 10am.
Included Tests
CD34+ Absolute Count and CD34+ Percentage
Comments
No STAT testing. Samples received after 4 pm will be run the next business day.
CPT Codes
86367
Revised
6/1/26
Initials
IM