Australia HIV Testing Algorithms [attached]
From the document:

Guidelines for Interpreting HIV Test Results – National and State Reference Laboratories Australia. A PDF Presentation on multiple strategies for interpreting HIV test results

The tricky bastards that they are… Some of the stated goals:

To reach consensus on: Interpretation of HIV test results. Reporting WB Indeterminate Results

The “WB” or Western Blot is used to putatively confirm the non-specific ELISA tests – what happens when the WB is indeterminate? There are some diagrams showing the multiple paths a test can take, given the testing algorithm used.

Aussie Interpretation