Human Immunodeficiency Virus 1 (HIV-1) PhenoSense Entry® (Monogram® Fuzeon Resistance)

TEST: 550240
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CPT: 87903
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Synonyms

  • Fuzeon® Resistance
  • PhenoSense Entry®

Expected Turnaround Time

16 - 26 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.

Related Information

Related Documents

For more information, please view the literature below.

HIV Specimen Collection Guide

HIV-1 Lifecycle, Drugs, and Susceptibility Assays

Supporting Individualized HIV Treatment Decisions

    Specimen Requirements

    Specimen

    Plasma, frozen

    Volume

    3 mL

    Container

    Lavender-top (EDTA) or plasma preparation tube (PPT™).

    Collection

    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) 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 specimens

    Test Details

    Use

    Determines phenotypic susceptibility to enfuvirtide (Fuzeon®) and assesses likely effectiveness before enfuvirtide is added to a patient's regimen or before changing a regimen that includes enfuvirtide

    Limitations

    This procedure should be used for patients with documented HIV-1 infection and viral loads ≥1000 copies/mL.

    Methodology

    Polymerase chain reaction (PCR) amplification and viral culture. PhenoSense Entry® is a trademark of Monogram Biosciences®.

    LOINC® Map

    Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
    550240 PhenoSense Entry (R) 550247 PhenoSense Entry(R) PDF 51969-4
    550240 PhenoSense Entry (R) 550248 PhenoSense Entry(R) 82719-6
    550240 PhenoSense Entry (R) 550249 PhenoSense Entry(R) Interp. 77202-0

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    CPT Statement/Profile Statement

    The LOINC® codes are copyright © 1994-2021, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf