HIV Test Information - Phenotypic Tests


*There are two general methods to test for the presence of drug-resistant HIV: genotypic tests* and phenotypic tests.**

Phenotypic Tests
Phenotypic tests provide information about the relative amount of antiretroviral drug required to suppress replication of the patient virus, compared to the amount of drug needed to supress replication of a laboratory strain of virus ("wild-type").

Many of these companies also provide genotypic testing. See genotype tables.

Phenotypic
For further information about companies or collaborators, click on the company name.

American Medical Laboratories	PhenoSense™ HIV	ViroLogic	See ViroLogic information page
ARUP Laboratory	PhenoSense™ HIV	ViroLogic	See ViroLogic information page
BC Centre	Antivirogram^®	Virco	See Virco information page
Chelsea & Westminster Hospital	Antivirogram^®	Virco	See Virco information page
LabCorp	Antivirogram^®, PhenoSense™ HIV	Virco, ViroLogic	See Virco/ViroLogic information pages
Mayo Medical Laboratories	Not available/lab declines to provide information at this time.
Quest Diagnostics	PhenoSense™ HIV	ViroLogic	See ViroLogic information page
Specialty Laboratories	PhenoSense™ HIV	ViroLogic	See ViroLogic information page
SRL	Antivirogram^®	Virco	See Virco information page
Virco	Antivirogram^®	Gilead, LabCorp, Quest, BC Centre (Vancouver), Chelsea and Westminster Hospital (London), SRL (Japan)	CLIA certified⁵	Commercially available⁶	No	No
ViroLogic	PhenoSense™	American Medical Laboratories, ARUP, Mayo Medical Laboratories, Quest Diagnostics, Specialty Laboratories	CLIA certified⁵	Commercially available⁶	No	Yes³

¹	See HIVresistanceWeb article regarding regulatory status.
²	Some companies provide assistance with reimbursement. This category refers to those companies that provide some free or reduced price tests.
³	State of California only (California Department of Health, Office of AIDS HIV Resistance Testing Program)
⁴	IDE = Investigational Device Exemption [see http://www.fda.gov/cdrh/devadvice/ide/]; see Dr. Michelle Roland's article regarding regulatory status.
⁵	CLIA = Clinical Laboratory Improvement Amendments; see Dr. Michelle Roland's article regarding regulatory status.
⁶	Commercially available for research use only.