Bracewell (22) has a cut on the sole of his right foot, sustained from cleaning up cut glass following a party at his home in Napier at the weekend.
Radio Sport reported yesterday that neighbours complained about a party at Bracewell's home getting out of control.
New Zealand manager Mike Sandle confirmed Bracewell would need a fitness test but had few other details yesterday.
''At the moment, I can't tell you if he's playing in this test or not,'' Sandle said.
''I am aware of some allegations. There's a lot I don't know at the moment. I need to ascertain some facts.''
Sandle said he would be ''very disappointed'' if the injury turned out to be alcohol-related.
''It's a distraction. We want to earn respect from our public and put in a good performance in this test.
''It's disappointing to be here. But I just need to find out the facts.''
Bracewell did not train with the Black Caps yesterday.
Sandle indicated the Black Caps had enough bowling cover in the squad if Bracewell was ruled out.
Otago's Ian Butler has been called into the team as cover and will train with the side today. If Bracewell is ruled unfit and the Black Caps opt to go with four seamers, Butler will make his first test appearance since October 2004. That would be some come-back.