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Test Code
TRDNA
Test Name
Trofile DNA
CPT Codes
87999
Expected Turnaround Time
29 - 33 days
Clinical Utility
Detect HIV-1 coreceptor tropism; determine eligibility for CCR5 antagonist therapy such as Selzentry™ (maraviroc).
Specimen and Container Info

Specimen Type: Whole Blood

  

Collection Container: Lavender Top (EDTA)

Desired Specimen Volume: 4 mL
Collection Instructions
  1. Collect 2 lavender top (EDTA) tubes via venipuncture.
  2. Freeze immediately after collection.
Processing and Submission Instructions
  1. Transport 4 mL of frozen whole blood in the original collection containers.
Patient Preparation

This procedure should be used for patients with documented HIV-1 infection and undetectable viral loads.
Transport Instructions

Transport to the laboratory frozen. 
Stability Requirements

Frozen

-20° C = 14 days

-80° C = indefinite
Causes for Rejection
  • Heparinized plasma
  • Nonfrozen specimen
Methodology
Polymerase Chain Reaction Amplification and Viral Culture
Reference Intervals

 See patient report.
Alternate Names
  •  Human Immunodeficiency Virus 1 (HIV-1) Trofile® DNA (Monogram® Coreceptor Tropism), Whole Blood
Reference Lab
Labcorp Of America Holdings
Testing Schedule
Routine, daily
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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