The problem with testing is this:

The U.S. Centers for Disease Control and Prevention (CDC) states that it can take as long as three months after infection for the virus antibody to show up in the bloodstream.

In other words, a test result today does not cover sexually activity the person may have engaged in for the past 3 months.

Because this is public knowledge, testing would not relieve you of legal liability.

Also, since test results can be issued by an unlimited number of doctors and health facilities, there is just no way to know if the document presented is real or fake.

The CDC advises that the only protection from transmission of HIV in anal sex is the use of a condom. Because of this, no relase - no matter how it is worded - will necessarily protect you from legal liability for being negligent.

There is another alternative, but it has some risk too.

The use of a woman's condom gives the appearance that no condom is being used while still providing protection. The caveat is that, although it has been tested for vaginal intercourse, it has never been tested for anal intercourse. On the other hand, they are recommended by some HIV prevention agencies for anal intercourse.

We've been using them for video production and selling them in our website stores for years with no reported mishap.