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HelpTest ID BLOD1391 Dihydrorhodamine Flow Cytometric Phorbol Myristate Acetate Test, Blood
Useful For
Evaluating chronic granulomatous disease (CGD), X-linked and autosomal recessive forms, complete myeloperoxidase deficiency
Monitoring chimerism and nicotinamide adenine dinucleotide phosphate (NADPH) oxidase function post-hematopoietic cell transplantation
Assessing residual NADPH oxidase activity pretransplant
Identifying female carriers for X-linked CGD
Assessing changes in lyonization with age in female carriers
Specimen Type
WB Sodium HeparinShipping Instructions
Testing is performed Monday through Friday. Specimens not received by 4 p.m. (CST) 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 with Normal Control and the corresponding patient information.
3. Send the whole blood specimen in the original tube. Do not aliquot.
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
Specimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| WB Sodium Heparin | Ambient | 48 hours | GREEN TOP/HEP |
Day(s) Performed
Monday through Friday
Report Available
3 to 4 daysMethod Name
Flow Cytometry
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
86352
Reporting Name
DHR Flow PMA, BReference 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.
Test Classification
This test was developed using an analyte specific reagent. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.Secondary ID
62765SANFORD LABORATORY INTERFACE BUILD INFORMATION
| Result Code | Result Code Description |
|---|---|
| 18167 | Absolute Neutrophil Count |
| 18168 | % PMA OX-DHR+ |
| 18169 | MFI PMA OX-DHR+ |
| 18170 | Control Absolute Neutrophil Count |
| 18171 | Control % PMA OX-DHR+ |
| 18172 | Control MFI PMA OX-DHR+ |
| 18173 | Interpretation |