HIVCO - Overview: HIV-1 and HIV-2 Antigen and Antibody Evaluation, Serum

Test Catalog

Test Name

Test ID: HIVCO    
HIV-1 and HIV-2 Antigen and Antibody Evaluation, Serum

Useful For Suggests clinical disorders or settings where the test may be helpful

Screening for HIV-1 and/or HIV-2 infection in asymptomatic patients


Diagnosing HIV-1 and/or HIV-2 infection in symptomatic patients


Follow-up testing of individuals with reactive results from rapid HIV tests

Reflex Tests Lists tests that may or may not be performed, at an additional charge, depending on the result and interpretation of the initial tests

Test IDReporting NameAvailable SeparatelyAlways Performed
HIVDIHIV Ab Confirm / Differentiation, SYesNo

Testing Algorithm Delineates situations when tests are added to the initial order. This includes reflex and additional tests.

This test begins with HIV-1/-2 antigen and antibody screen by the chemiluminescence immunoassay method. If HIV-1/-2 screen result is reactive, then HIV-1/-2 antibody differentiation test (by immunochromatographic method) is performed at an additional charge. 


See HIV Testing Algorithm (Fourth Generation Screening Assay) Including Follow-up of Reactive HIV Rapid Serologic Test Results in Special Instructions.

Special Instructions and Forms Library of PDFs including pertinent information and consent forms, specimen collection and preparation information, test algorithms, and other information pertinent to test

Method Name A short description of the method used to perform the test

Chemiluminescent Microparticle Immunoassay

NY State Approved Indicates the status of NY State approval and if the test is orderable for NY State clients.


Reporting Name A shorter or abbreviated version of the Published Name for a test; an abbreviated test name

HIV-1/-2 Ag and Ab Screen, S

Aliases Lists additional common names for a test, as an aid in searching

Acquired Immune Deficiency Syndrome (AIDS)
HIV Types 1 and 2 Antibodies
HIV-1/-2 Ab
HIV-1/-2 Antibodies
HIV-1/-2 Antigen
HIV-1/-2 Ag/Ab
Human Immunodeficiency Virus (HIV)