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Test ID SZDIA Sezary Diagnostic Flow Cytometry, Blood

Useful For

Identifying phenotypically aberrant T-cell population in peripheral blood as part of the diagnostic workup for Sezary syndrome


Roughly assessing the circulating tumor burden in mycosis fungoides, if the phenotype of the neoplastic cells is distinctive enough

Additional Tests

Test ID Reporting Name Available Separately Always Performed
FIRST Flow Cytometry, Cell Surface, First No Yes
ADD1 Flow Cytometry, Cell Surface, Addl No Yes

Reflex Tests

Test ID Reporting Name Available Separately Always Performed
FCIMS Flow Cytometry Interp, 9-15 Markers No No
FCINS Flow Cytometry Interp,16 or greater No No

Testing Algorithm

This Sezary panel is ordered for patients with a clinical suspicion of Sezary syndrome or cutaneous T-cell lymphoma (CTCL) with peripheral blood involvement. For patients without a previously confirmed diagnosis of Sezary syndrome, a triage panel will also be performed to exclude a B-cell lymphoproliferative disorder.


A triage panel is always performed. The panel is charged based on number of markers tested (FIRST for first marker, ADD1 for each additional marker). In addition, reflex testing may occur to fully characterize a disease state or clarify any abnormalities from the screening test. Reflex tests will be performed at an additional charge for each marker tested (ADD1 if applicable).

Method Name


Reporting Name

Sezary Diagnostic Flow Cytometry, B

Specimen Type

Whole blood

Ordering Guidance

This test is not appropriate for monitoring patients with a diagnosis of Sezary syndrome. For monitoring purposes, order SZMON / Sezary Monitoring Flow Cytometry, Blood.

Specimen Required


Preferred: Yellow top (ACD)

Acceptable: Lavender top (EDTA), green top (heparin)

Specimen Volume: 6 mL

Collection Instructions:

1. Send whole blood specimen in original tube. Do not aliquot.

2. Label specimen as blood.

Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Whole blood Ambient (preferred) 72 hours
  Refrigerated  72 hours

Reference Values

An interpretive report will be provided. This test will be processed as a laboratory consultation. An interpretation of the immunophenotypic findings and, if available, morphologic features will be provided by a board-certified hematopathologist for every case.

Day(s) Performed

Monday through Saturday

Report Available

1 to 3 days

Performing Laboratory

Mayo Clinic 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 US Food and Drug Administration.

CPT Code Information

88184-Flow cytometry; first cell surface, cytoplasmic or nuclear marker x 1

88185-Flow cytometry; additional cell surface, cytoplasmic or nuclear marker (each)

88188-Flow Cytometry Interpretation, 9 to15 markers (if appropriate)

88189-Flow Cytometry Interpretation, 16 or more markers (if appropriate)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
SZDIA Sezary Diagnostic Flow Cytometry, B 101118-8


Result ID Test Result Name Result LOINC Value
CK126 Sezary Diagnostic No LOINC Needed
CK127 Final Diagnosis 50398-7
CK128 Special Studies 30954-2
CK129 Microscopic Description 22635-7


If not ordering electronically, complete, print, and send a Hematopathology/Cytogenetics Test Request (T726) with the specimen.