Test Overview
Test Methodology

Polymerase chain reaction (PCR) amplification and viral culture.

Test Usage

Phenotypic determination of the type of co-receptor (CCR5, CXCR4, or both) used by the patient's HIV-1 strain to enter host CD4+ cells (HIV-1 entry co-receptor tropism).

Reference Range *

Interpretive report provided

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Sunday - Saturday
Analytic Time

31-41 days

Soft Order Code
FFTRP
Synonyms
    Laboratory
    Sendout
    Reference Laboratory
    Mayo FFTRP (91774) (Monogram)
    Section
    Special Testing
    Specimen Requirements
    Collection

    The most recent HIV viral load result and collection date are needed to order this test.

    Collection Instructions

    Collect specimen in a lavender top or PPT (pearl top) tube. Centrifuge, aliquot plasma into a plastic vial within 2 hours of collection and freeze. The most recent HIV viral load result and collection date are needed to order this test.

    Normal Volume

    3 mL EDTA plasma

    Minimum Volume

    1 mL EDTA plasma

    Storage Temperature
    Strict frozen
    Additional Information

    Test sent to Mayo Medical Laboratories; performed by Monogram Biosciences.

    Billing
    CPT Code
    87999
    Fee Code
    AA637
    NY State Approved
    No