HIV-1 with Reflex to HIV-1 Confirmation by Western Blot
Specimens will be screened by an Enzyme Immunoassay (EIA) test that uses HIV-1 antigens, including inactivated, purified HIV-1 viral lysate proteins, for the detection of antibodies to HIV-1. Any repeatedly reactive EIA specimen will be confirmed with a Western Blot test that detects and identifies individual proteins to Human Immunodeficiency Virus Type 1 (HIV-1). The Western Blot is considered a more specific test than the screening test. This test is only available to program approved sites.
Enzyme Immunoassay/Western Blot
OraSure Collection Device: Place the pad in the mouth (pad oriented down) between the lower cheek and gum, and gently rub the pad back and forth along the gum line until the pad is moist. Leave the pad in the mouth for a minimum of two minutes and a maximum of five minutes. At the end of two minutes, remove the pad from mouth, insert the pad into the vial, and push it all the way to the bottom of the vial into the blue liquid. Break the plastic shaft by bending it against the side of the vial until the upper half snaps off. Replace the cap tightly. Specimen must be received within 21 days of collection.
Store specimens at refrigerator temperature (2-8° C) prior to shipment.
Specimens should be sent daily or next working day.
Transport in MSPHL shipping containers at room temperature.
Oral mucosal transudate
Test Request Form(s)
EIA: Reactive, Non-Reactive, Unsatisfactory
Western Blot: Positive, Negative, Indeterminate
HIV 1 EIA: Non-Reactive
OraSure HIV-1 Western Blot: Negative
No Name on Specimen
Name on Specimen Does Not Match Name on Request Form
Quantity Not Sufficient
Collection Device Expired
Receipt of Specimen > 21 days After Collection Date
7-8 days after receipt of specimen, specimens are batched and ran once weekly
86701 EIA; if reflexed, add 86689 Western Blot
Western Blot: 35439-9
Testing alone cannot be used to diagnose AIDS, which is a clinical syndrome. The diagnosis of AIDS must be established clinically. A negative test result at any point does not preclude the possibility of exposure to or infection with HIV-1 and/or HIV-2.
Effective April 1, 2012, the HIV Blue Card, officially known as the Provider's Confidential Report of HIV/AIDs Infection report form (MO 580-1641), will no longer be provided with the positive HIV Western Blot laboratory results. Click here to view letter.