There's a misunderstanding here of the relevance of "test" results.

If a model has been tested, and the test was negative (read "not positive"), and the model has not had unprotected sex six months prior to the test, nor since the test... there is a relative sense that the model does not carry bacteria nor viruses that can harm another model.

If not, then not.

The big factor is whether a model has had unprotected anal intercourse, receiving pre-cum, saliva, semen, blood in the anus/rectum, for a period of time before and certainly after a test.

Having a test, then having bareback sex the next day, makes the test moot in terms of any future unsafe sex work from the time of any unsafe sex going forward.

To be concerned about one's personal health and safety, a test result "today" would really be for a point about 3-6 months prior, depending on the roughness, duration, multiple partners, and quantity of unsafe sex experiences.