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Test Code BLOD1391 Dihydrorhodamine (DHR) Flow Cytometric Phorbol Myristate Acetate (PMA) Test, Blood

Additional Codes

Mayo Test Code: DHRP

Useful For

Diagnosis of chronic granulomatous disease (CGD), X-linked and autosomal recessive forms, complete myeloperoxidase (MPO) deficiency; monitoring chimerism and nicotinamide adenine dinucleotide phosphate (NADPH) oxidase function posthematopoietic cell transplantation


Assessing residual NADPH oxidase activity pretransplant


Identification of carrier females for X-linked CGD; assessment of changes in lyonization with age in carrier females

Specimen Type

WB Sodium Heparin

Shipping Instructions

Specimens are required to be received in the laboratory weekdays and by 4 p.m. on Friday. Draw and package specimen as close to shipping time as possible. It is recommended that specimens arrive within 24 hours of draw. Ship specimen overnight in an Ambient Mailer-Critical Specimens Only (T668).

Samples arriving on the weekend may be canceled.

Necessary Information

Ordering physician name and phone number are required.

Specimen Required

A whole blood sodium heparin specimen and a whole blood sodium heparin control specimen from an unrelated, healthy donor are required.


Supplies: Ambient Mailer-Critical Specimens Only (T668)



Container/Tube: Green top (sodium heparin)

Specimen Volume: 5 mL

Collection Instructions: Send specimen in original tube. Do not aliquot.


Normal Control:

Container/Tube: Green top (sodium heparin)

Specimen Volume: 5 mL

Collection Instructions:

1. Draw a control specimen from a normal (healthy), unrelated person within an hour of the patient.

2. Label clearly on outermost label normal control.

3. Send specimen in original tube. Do not aliquot.

Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time
WB Sodium Heparin Ambient 48 hours

Reject Due To


Mild OK; Gross reject


Mild OK; Gross reject




Lithium heparin
Green top microtube

Reference Values

Result Name


Cutoff for defining normal

% PMA ox-DHR+






Control % PMA ox-DHR+



Control MFI PMA ox-DHR+




The appropriate age-related reference values for Absolute Neutrophil Count will be provided on the report.

Day(s) and Time(s) Performed

Monday through Friday

Specimen must be received by 4 p.m. on Friday.

Performing Laboratory

Mayo Medical Laboratories in Rochester

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 U.S. Food and Drug Administration.

CPT Code Information



Method Name

Flow Cytometry