Which test can be used to diagnose discalculia?

My daughter is entering 10th grade and has an IEP and gets support services. We are hoping she can attend college but are not sure about her math skills. She works extremely hard at math but remains way behind her peers. I just looked at the PSAT sample math questions and there is no way she will pass.

I have read the descriptions here for discalculia and she has every symptom. I would like to know exactly what type of evaluation or neuro-psych test would produce a diagnosis of Discalculia.

Thanks,
NancyD