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HelpCatalog ID FFTRP Trofile Co-Receptor Tropism Assay
Reporting Name
Trofile Phenotypic Corecept TropismUseful For
Detect HIV-1 coreceptor tropism; determine eligibility for CCR5 antagonist therapy such as maraviroc (Selzentry)
Specimen Required
Specimen Type: Plasma
Container/Tube: Lavender-top (EDTA) or plasma preparation tube (PPT)
Specimen Volume: 3 mL
Collection Instructions: Draw blood in either PPT (pearl top) or lavender-top (EDTA) tubes.
Centrifuge specimen within six hours of collection. 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.
To avoid delays in turnaround time when requesting multiple tests, please submit separate frozen specimens for each test requested.
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.
Collect 6.0 mL blood in Purple top tubes.
Day(s) Performed
Sunday through Saturday
Reject Due To
| Other | PPT not centrifuged; insufficient volume; heparinized plasma; non frozen specimens |
Performing Laboratory
Monogram Biosciences, IncSpecimen Type
Plasma EDTASpecimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Plasma EDTA | Frozen | 14 days |
CPT 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 |
Method Name
Polymerase chain reaction (PCR) amplification and viral culture.