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HelpTest ID CD4NY CD4 Count for Monitoring, New York, Blood
Useful For
Only orderable by New York clients
Serial monitoring of CD4 T-cell count in patients who are HIV-positive
Follow-up and diagnostic evaluation of primary cellular immunodeficiencies, including severe combined immunodeficiency
T-cell immune monitoring following immunosuppressive therapy for transplantation, autoimmunity, and other immunological conditions where such treatment is utilized
Assessment of T-cell immune reconstitution post hematopoietic cell transplantation
Early screening of gross quantitative anomalies in T cells in infection or malignancies
This assay should not be used for diagnosing T-lymphocytic malignancies or evaluation of T-cell lymphocytosis of unknown etiology.
Method Name
Flow Cytometry
Reporting Name
CD4 T-Cell Count, New YorkSpecimen Type
Whole Blood EDTAOrdering Guidance
For diagnosing T-lymphocytic malignancies or evaluation of T-cell lymphocytosis of unknown etiology, order LCMS / Leukemia/Lymphoma Immunophenotyping, Flow Cytometry, Varies, which includes a hematopathology review.
Shipping Instructions
It is recommended that specimens arrive within 24 hours of collection. Collect and package specimen as close to shipping time as possible.
Necessary Information
Date and time of collection are required.
Specimen Required
Container/Tube: Lavender top (EDTA)
Specimen Volume: 3 mL
Collection Instructions: Send whole blood specimen in original tube. Do not aliquot.
Additional Information: For serial monitoring, it is recommended that specimen collection be performed at the same time of day.
Specimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Whole Blood EDTA | Ambient | 72 hours | PURPLE OR PINK TOP/EDTA |
Reference Values
The appropriate age-related reference values will be provided on the report.
Day(s) Performed
Monday through Sunday
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
86359-T cells, total count
86360-Absolute CD4/CD8 count with ratio
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| CD4NY | CD4 T-Cell Count, New York | 65759-3 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 3321 | CD45 Total Lymph Count | 27071-0 |
| 3316 | % CD3 (T Cells) | 8124-0 |
| 3322 | CD3 (T Cells) | 8122-4 |
| 3319 | % CD4 (T Cells) | 8123-2 |
| 3325 | CD4 (T Cells) | 24467-3 |
| 3320 | % CD8 (T Cells) | 8101-8 |
| 3326 | CD8 (T Cells) | 14135-8 |
| 3327 | 4/8 Ratio | 54218-3 |
| 28358 | Comment | 48767-8 |
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.Disease States
- HIV infection