Transcription of Understanding the HIV Testing Algorithm
1 Understanding THE. HIV Testing Algorithm . The State of wisconsin AIDS/HIV Program is not a medical provider and does not provide medical advice. The following Testing recommendations are from current Association of Pub- lic Health Laboratories (APHL) and Centers for Disease Control and Prevention (CDC). guidelines. More information can be found at: 1 THE SCREENING. TEST 3 THE NUCLEIC ACID. TEST. Most modern methods test for antigen (Ag) Might appear under several names: HIV-1. and antibody (Ab) RNA qualitative, HIV-1 RNA PCR, or an Some outdated methods only test for HIV-1 NAT. antibodies and may be listed as an enzyme If negative, rules out acute infection in people immunoassay (EIA) with a reactive screen but a negative or If a screening test is reactive, more Testing indeterminate supplementary test must be done to know someone's HIV If a NAT is positive after a reactive screen status.
2 And a negative or indeterminate supplementary test, then the person is 2 SUPPLEMENTARY. Testing . acutely infected with HIV. If a NAT is negative, then the person is HIV. Modern methods differentiate between negative. HIV-1 and HIV-2 antibodies (answers the question, Are any HIV antibodies present? If ! yes, what kind of antibodies? ) If a client is confirmed to be HIV. positive, report the positive results to The Western Blot is an outdated the wisconsin AIDS/HIV Program within supplementary test that is not recommended 72 hours. Case report forms can be found for use by the CDC online: If a supplementary test is positive for either forms/f4 kind of antibody after a reactive screening To report, call: test, then the person is HIV positive.
3 Rebecca LeBeau: 608-266-8658. Linda Ziegler: 608-267-6727. If a supplementary test is negative or Kat Grande: 608-266-2664. indeterminate, more Testing must be done to know someone's HIV status. QUESTIONS? Call the State of wisconsin HIV Program Surveillance team. Katarina Grande 608-266-2664 Rebecca LeBeau 608-266-8658 Linda Ziegler 608-267-6727. Department of Health Services | Division of public Health | P-01835 (08/2017). HIV Testing . Algorithm DIAGRAM. STEP 1 Screening test (HIV 1-2 Ag/Ab). Reactive Nonreactive HIV negative STEP 2 Supplementary test (HIV 1/2 Ab Differentiation). HIV-1 Ab positive HIV-1 Ab negative/ HIV-1 Ab negative/. indeterminate HIV-1 Ab positive indeterminate HIV-2 Ab negative/ HIV-2 Ab positive indeterminate HIV-2 Ab negative/ HIV-2 Ab positive indeterminate HIV-2 positive with HIV-1 positive HIV-1 cross HIV-2 positive reactivity OR HIV.
4 Positive untypable STEP 3* HIV-1 RNA NAT (nucleic acid Testing by PCR). *This test is not always reflexed by laboratory;. additional blood draw and physician order may be required Positive Negative HIV-1 positive HIV negative Acute infectio
