Update Type: Test Methodology Changed
Test Updated: 02/22/2023
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
Reference Laboratory
Mayo FFTRP (91774) (Monogram)
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
Storage Temperature
Strict frozen
Additional Information

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

CPT Code
Fee Code