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HelpTest ID FFTRO Trofile DNA Co-Receptor Tropism Assay
Useful For
To determine the co-receptor tropism (CCR5, CXCR4, or dual/mixed) of a patient's HIV-1 strain for selection of CCR5 co-receptor antagonist therapy, when patient's HIV-1 viral load is <1,000 copies/mL.
Method Name
CD4 cell culture assay for phenotypic recombinant-virus co-receptor tropism.
Reporting Name
Trofile DNA Phenotypic Corecept TroSpecimen Type
Whole Blood EDTASpecimen Required
Draw 4 mL blood in a lavender-top (EDTA) tube(s), (Do not centrifuge.) Freeze and ship frozen.
Note: Trofile DNA is recommended for patients with undetectable viral loads.
Specimen Minimum Volume
3 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Whole Blood EDTA | Frozen | 14 days |
Day(s) and Time(s) Performed
Monday through Friday
Performing Laboratory
Monogram Biosciences, IncCPT Code Information
87999
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| FFTRO | Trofile DNA Phenotypic Corecept Tro | 53923-9 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| Z2283 | Tropotype Result | 53923-9 |
| Z2284 | Interpretation: | Not Provided |