Test Details
Methodology
Polymerase chain reaction (PCR) amplification and viral culture. Samples are forwarded to Monogram Biosciences® for testing, reporting, and billing. Trofile® is a trademark of Monogram Biosciences®.
Result Turnaround Time
27 - 35 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Use
Detect HIV-1 coreceptor tropism; determine eligibility for CCR5 antagonist therapy such as maraviroc (Selzentry®)
Limitations
This procedure should be used for patients with documented HIV-1 infection and viral loads ≥1000 copies/mL.
This test was developed and its performance characteristics determined by Labcorp. It has not been cleared or approved by the Food and Drug Administration.
References
Specimen Requirements
Specimen
Plasma, frozen
Volume
3 mL
Container
Lavender-top (EDTA) or plasma preparation tube (PPT™)
Collection Instructions
Collect specimen in two lavender-top (EDTA) tubes or two PPT™ tubes. Do not use green-top (heparin) tubes. Centrifuge specimen within six hours of collection. Transfer plasma to one or more polypropylene screw-capped tube(s) (not "pop-top" or "snap-cap"), and freeze. Ship specimen frozen. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.
Storage Instructions
Freeze
Causes for Rejection
PPT™ not centrifuged; insufficient volume; heparinized plasma; nonfrozen specimen
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 553100 | Trofile(R) | 829632 | Trofile(R) PDF | 51969-4 | ||
| 553100 | Trofile(R) | 829666 | Tropotype: | 50790-5 | ||
| 553100 | Trofile(R) | 829633 | Trofile(R) | 57182-8 | ||
| 553100 | Trofile(R) | 829634 | Trofile(R) Interpretation | 77202-0 | ||
| 553100 | Trofile(R) | 829635 | Trofile(R) Methodology | 49549-9 | ||
| 553100 | Trofile(R) | 829636 | Trofile(R) References | 75608-0 | ||
| Order Code | 553100 | |||||
| Order Code Name | Trofile(R) | |||||
| Order Loinc | ||||||
| Result Code | 829632 | |||||
| Result Code Name | Trofile(R) PDF | |||||
| UofM | ||||||
| Result LOINC | 51969-4 | |||||
| Order Code | 553100 | |||||
| Order Code Name | Trofile(R) | |||||
| Order Loinc | ||||||
| Result Code | 829666 | |||||
| Result Code Name | Tropotype: | |||||
| UofM | ||||||
| Result LOINC | 50790-5 | |||||
| Order Code | 553100 | |||||
| Order Code Name | Trofile(R) | |||||
| Order Loinc | ||||||
| Result Code | 829633 | |||||
| Result Code Name | Trofile(R) | |||||
| UofM | ||||||
| Result LOINC | 57182-8 | |||||
| Order Code | 553100 | |||||
| Order Code Name | Trofile(R) | |||||
| Order Loinc | ||||||
| Result Code | 829634 | |||||
| Result Code Name | Trofile(R) Interpretation | |||||
| UofM | ||||||
| Result LOINC | 77202-0 | |||||
| Order Code | 553100 | |||||
| Order Code Name | Trofile(R) | |||||
| Order Loinc | ||||||
| Result Code | 829635 | |||||
| Result Code Name | Trofile(R) Methodology | |||||
| UofM | ||||||
| Result LOINC | 49549-9 | |||||
| Order Code | 553100 | |||||
| Order Code Name | Trofile(R) | |||||
| Order Loinc | ||||||
| Result Code | 829636 | |||||
| Result Code Name | Trofile(R) References | |||||
| UofM | ||||||
| Result LOINC | 75608-0 |