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HelpTest ID FFTRP Trofile 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 a 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 Phenotypic Corecept TropismSpecimen Type
Plasma EDTASpecimen Required
Draw blood in either PPT (pearl top) or lavender-top (EDTA) tubes. Remove plasma from cells immediately, and transfer specimen to a screw-capped, plastic vial. Freeze 3 mL of PPT plasma or EDTA plasma immediately, send specimen frozen.
RECOMMENDED:
1. Patient's most recent viral load
2. Viral load collection date
Note: 1. Intended to use only for patients with viral loads greater than or equal to 1000 copies/mL. For best results, viral loads should be confirmed within two weeks prior to submission for testing at Monogram.
2. Patient samples submitted <30 days apart are considered duplicate and will be cancelled.
Specimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Plasma EDTA | Frozen | 14 days |
Day(s) Performed
Monday through Friday
Performing Laboratory
Monogram Biosciences, IncCPT Code Information
87999
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| FFTRP | Trofile Phenotypic Corecept Tropism | 57182-8 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| Z1038 | Tropotype Result | 57182-8 |
| Z1039 | Note: | Not Provided |
| Z1040 | Activity of CCR5 antag anticipated? | Not Provided |