Test Overview
Test Methodology
CD4 cell culture assay for phenotypic recombinant-virus co-receptor tropism.
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 ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
Days Set Up
Monday - Friday
Analytic Time
18 - 23 days
Soft Order Code
FFTRP
Laboratory
Sendout
Reference Laboratory
Mayo FFTRP (91774) (Monogram)
Section
Special Testing
Specimen Requirements
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.
Normal Volume
3 mL EDTA plasma
Minimum Volume
1 mL EDTA plasma
Additional Information
Test sent to Mayo Medical Laboratories; performed by Monogram Biosciences.
Billing
CPT Code
87999
Fee Code
AA637