Test Code DHRP Dihydrorhodamine Flow Cytometric Phorbol Myristate Acetate Test, Blood
Specimen Type
WB Sodium HeparinShipping Instructions
Testing is performed Monday through Friday. Specimens not received by 4 p.m. Central time on Friday may be canceled.
Collect and package specimen as close to shipping time as possible. Ship specimen overnight in an Ambient Shipping Box-Critical Specimens Only (T668) following the instructions in the box. It is recommended that specimens arrive within 24 hours of collection.
Specimens arriving on the weekend and observed holidays may be canceled.
Necessary Information
Ordering healthcare professional name and phone number are required.
Specimen Required
Two whole-blood sodium heparin specimens are required, one from the testing patient and the other from an unrelated healthy donor as a control.
Supplies: Ambient Shipping Box-Critical Specimens Only (T668)
Patient:
Container/Tube: Green top (sodium heparin)
Specimen Volume: 5 mL
Collection Instructions: Send whole blood specimen in original tube. Do not aliquot.
Normal Control:
Container/Tube: Green top (sodium heparin)
Specimen Volume: 5 mL
Collection Instructions:
1. Collect a control specimen from the unrelated healthy donor within an hour of the patient's specimen collection time.
2. Label clearly as Normal Control and the corresponding patient information.
3. Send the whole blood specimen in the original tube. Do not aliquot.
4. Rubber band patient specimen and control vial together.
Specimen Minimum Volume
1 mL
Specimen Stability Information
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
WB Sodium Heparin | Ambient | 48 hours | GREEN TOP/HEP |
Reject Due To
Gross hemolysis | Reject |
Gross lipemia | Reject |
Reference Values
Result Name |
Unit |
Cutoff for defining normal |
% PMA ox-DHR+ |
% |
≥95% |
MFI PMA ox-DHR+ |
MFI |
≥60 |
Control % PMA ox-DHR+ |
% |
≥95% |
Control MFI PMA ox-DHR+ |
MFI |
≥60 |
MFI = mean fluorescence intensity
PMA = phorbol myristate acetate
DHR = dihydrorhodamine
The appropriate age-related reference values for Absolute Neutrophil Count will be provided on the report.
Day(s) Performed
Monday through Friday
Report Available
3 to 4 daysPerforming Laboratory
Mayo Clinic Laboratories in RochesterCPT Code Information
86352
Method Name
Flow Cytometry